Why did changing WiFi channels remove my screen flicker? - Nexus 7 Q&A, Help & Troubleshooting

Hello all,
I am new to both this forum and Android as a Nexus 7 owner. First things first: I've been a semi pro gamer for a few years. (currently a BF3 jet pilot at world rank 20) My vision is extremely sensitive to movement, color and changes in brightness. I can tell you what Hz a crt is running at from a glance and see very easily when any sort of interference is coming into an LCD. I stare at screens a lot. I only state this because I am hyper sensitive to these things as opposed to people who turn on lux and think the problem is gone because the filters make it less visible.
I've owned three Nexus 7s so far. The first one had flicker that was easily visible in Gmaps and Chrome. The second one's accelerometer was grossly defective so it didn't even get screen tests. The third one came off the truck fresh on Friday and when tested (download going, 0 backlight, auto adjust and wifi at 2 bars) in Gmaps it had a slight flicker to it. Almost a pulse more than a full flash. I figured that's as good as these are going to get so I kept it. I applied the tape mod (electrical) and it lessened the duration of the flicker but didn't get rid of it. I had to compensate by adding brightness like everyone does but even then I could see the back light making pulse changes extremely faintly on white screens. I've seen a couple of others here with keen vision who noticed the same thing. It's not like a brightness change but more like a distortion. I'd say most normal folks wouldn't even notice it but for me it was an annoying itch reminding me of the fault. Because of that I tried the suggestion of changing the WiFi channel.
I went from channel 6 (2.437Ghz) to 11 (2.462Ghz) and instantaneously on reconnect the pulse was gone. I began testing again in darkness, zero backlight, auto adjust, large download going, wifi at 1-2 bars and scrolling like a maniac on Gmaps. Result: Absolute zero pulse, flash or distortion... And this is a result confirmed by someone hyper sensitive to any imperfections at all.
I'd like to know why this happens from any of you tech lords here. If flicker is a hardware issue caused by bad soldier as some claim, why would wifi channel remove the issue? As most of you know, channel 6 is default on a lot of US routers and if you travel with the N7 without using hotspot or etc, six will return to cause issues. Is the Ghz jump from .437 to .462 large enough to actually affect hardware to that degree? I ask because it seems to me that this could be something fixed by software updates.
Making the N7 perfect at home where I control the channel is one thing, but on traveling I fear old channel 6 will sneak up on me again. What do you guys think? Might this really be software after all? And if it is, do you think Asus or Google would even take the time to fix it?

I'm not sure really. I have my router set to channel 10 and I had the screen flickering! What fixed it for me was using Lux Dash app, I think it's a problem with the auto. brightness acting up, but not sure.

I had flickering on channel 2, replaced my unit and then had no flickering while still on channel 2.
The common consensus is that flickering happens when you have a weak signal, if you change channels to one that doesn't have any interference, you'll see an improvement.
So I'd assume your flickering potential is still there, you just now have a signal strong enough not to trigger it.

Cryingmoose said:
I had flickering on channel 2, replaced my unit and then had no flickering while still on channel 2.
The common consensus is that flickering happens when you have a weak signal, if you change channels to one that doesn't have any interference, you'll see an improvement.
So I'd assume your flickering potential is still there, you just now have a signal strong enough not to trigger it.
Click to expand...
Click to collapse
Thanks for the reply. The only problem with that idea is that part of the testing I did was dropping the signal purposefully to one bar on the Nexus. So both signals were being extremely weakened. I live in an area where my wifi is the only wireless network in range so would interference be an issue in the first place?
Sent from my Nexus 7 using xda app-developers app

Related

[Q] Autobrightness problem?

Hey guys. I'm sorry for being a newbie but I'm new to this section and couldn't find the issue in a few other threads that I searched through.
I was really happy with my Nexus 7 until the 4.2 update that introduced several issues.
The most apparent is the autobrightness one. On 4.1 it was a little dim but stable - I could easily read at night and during the day time and it seemed to adjust perfectly in a totally non-annoying manner.
Now, however whenever I read something it keeps flashing - going from 0% to 50%+ in a second and then back after a short period time despite the fact that the lighting conditions do NOT change. It happens even when I'm in a totally dark room and holding the tablet in the very same position without moving it.
Last night I placed it on my desk to watch a movie with no artificial light sources around whatsoever and the brightness would go up or down every 10 seconds or so.
Sometimes I had a feeling that it depends a little on what's currently being displayed as it happens A LOT when playing a movie and it changed more often when a scene would change (for example it got a little BRIGHTER when it was displaying bright images already, thus hurting my eyes).
I usually use my tablet when it's dark already so I find it really almost impossible to read with autobrightness on because books with white background just begin glowing spontaneously in my eyes and then after a few seconds it dims so I have to adjust again and before I do it begins glowing hard again.
Now I know that I can always set it manually but the thing is that I really liked it the way it was in 4.1 - it was perfect at night and also perfect during daytime without me having to change it manually a couple of times a day. I would totally love a feature to be able to correct the autobrightness (Sort of like in Iphones or older Samsung Androids) but what I had on 4.1 was good enough.
Do you guys have this issue as well?
I have a couple of other issues that did not occur on the previous OS version and the tablet is a little bit less responsive (not UI but in apps) so I wouldn't mind going back to 4.1 actually if there's a way.
Yes i have this
Same problem here. Google screwed up auto brightness with their shoddy update. Very frustrating.
Sent from my Galaxy Nexus using xda premium
My C60 has the issue.
This is why I use Lux for autobrightness. I can't use a device without it now.

HTC One 4.2.2 update pros and cons

I updated my ONE to 4.2.2 around 3 days ago. Needless to say its a pretty cool and major update. Still some observations..
Mentioned in Update Changelog
DayDream
Improved menu button
Notification Bar
Quick settings
AE|AF lock
Back buton = start of Blinkfeed
Some of the good stuff which wasnt mentioned in the log
Gallery has removed the extra step to go to events,albums etc
App drawer animation is waaay smoother
Dynamic contrast now doesnt flicker the screen [I think]
If you have multiple types of numbers stored for a contact, it comes up in small just above the message from the type the message has come
Some of the Issues I found
Normal mode in camera produces a blue tinge in the view finder
BoomSound volume is a little lesser
Power saving mode has degraded. Or maybe the brightness level has been increased. Something has changed in that
One more - I got Wechat preinstalled after this update!
Any of you facing any issues?
I saw nothing wrong with the camera.
But i hav one priblem since 4.1.2 the keyboard flicker sometime, does anybody hav this also??
Sent from my HTC One using xda premium
Can someone who has 4.2.2 comment as to whether there is still a waiting period when sending group messages? What I mean is that when you send a group mms message, there is a small popup with a blue circle that says "Please wait..." Is that still the case? Thanks.
I can confirm too that boomsound sounds a little lesser. and the camera I tested In a bright sunny day, in the screen is something (better I think) and them the picture taken is a little warmer.
The sky quality even in sunny day have a very bad quality. its like 8bit blue color.
my sound isnt as loud anymore and i think my battery got worse, i get 1 hour less screen time -_-
Sound is down for sure but my guess is that some people blew their speakers with very loud files I assume this is a "fix"
Power saver mode doesn't work after update.... Seriously need to fix it soon
Sent from my HTC One using xda app-developers app
cons:
- proximity issue
- crackling noise during call
dsymbol said:
cons:
- proximity issue
- crackling noise during call
Click to expand...
Click to collapse
Yeah proximity issue. Once a call starts, suddenly the screen would go black and I have to toggle the power button to turn it on. And when you do that, it wont turn off i.e the proximity wont work.
I have no issues with the camera, seems very good still to me...I get the proximity issue though it seems intermittent, I don't really use the speakers to be fair so not sure about the difference there. They still kick the crap out of any other phone I've heard so can't complain! I also think my battery isn't as good as it was though I'm getting there with it. Think the settings are just a little different. I did notice that there seem to be two auto-brightness settings by default if you tap the brightness in quick settings there is a bright and a dim auto-brightness by the looks of it to me.....might be wrong (and I dont mean powersaver auto-brightness, that is lower again!)
Since the 4.2.2 update, my wifi takes between 2-4 attempts before it successfully connects to my d-link router, i also have an Huawei router and it`s the same, before the update it only took one attempt
Also the new drop down setting list, wifi, bluetooth ect. where is the GPS one.
John.
Videos didnt work after update
I have videos downloaded in my videos folder wich were running fine before ota 4.2.2 update. but after update video extension were not supported anymore.
i am running htc stock videoplayer only
Battery... battery took a hit, and not a small one.
I'd say 20% is just gone... and "Kernel (Android OS)" looks to be the bad guy who's ****ing things up.
battery life has gone down
Worth noting that I had massive wakelocks from 7 Digital so disabled that and my battery seems better already.....
djq said:
battery life has gone down
Click to expand...
Click to collapse
Mine went down for the first couple of days but now seems to have settled down and if anything is slightly better.
Seems the battery needs to recalibrate over a few charge cycles.
15% and 100% battery level notification sound, wish i could disable it
NextNexus said:
Can someone who has 4.2.2 comment as to whether there is still a waiting period when sending group messages? What I mean is that when you send a group mms message, there is a small popup with a blue circle that says "Please wait..." Is that still the case? Thanks.
Click to expand...
Click to collapse
Anyone?
Also i think it takes more time to charge now..
As people mentioned, battery might need 3-4 cycles to recalibrate...
And yes dynamic contrast flickering has stopped. Screen doesn't into an infinite loop trying to adjust the brightness on a white background screen. Need more confirmation though..
Sent from my HTC One using xda app-developers app
Battery is horrible, I got my update about a week ago and no improvements. In fact, after first charge since 4.2.2 battery was EXCELLENT. But since then, it's awful. Power saving mode is not working, I had it on all the time because phone would overheat in these temperatures. (40+ degrees).
I am seriously thinking about rooting my phone and installing Paranoid Android on it, I love Sense but 4.2.2 just made the phone worse in my opinion
The only thing that's keeping me from moving it's the boom sound + beats audio.

[POLL: Vote 4 Yours] Summary of issues people having with g4

Let's be clear. G4 is an awesome device. But it's still kindof in the pre-production phage, don't you think? It's not even available 10 countries in the world. Anyway many of who have already bought LG G4, are actually migrated from another smartphone branding either HTC, Samsung, Nexus, Apple etc. And the youtubers contributed a lot in this publicity for LG. I hardly found anyone said any bad thing about G4, neither about it's battery life nor performance in those videos or reviews. But these two have become the most concerning area as well as disappointment for many of the users right now. I, myself also have been suffering with a few issues. I have already changed one device. Coming from XDA forum, here I will try my best to summarize all the problems people are facing with their G4 & also my observation on that matter from my personal experience as well as gathered knowledge from almost all the forums in XDA:
1. MISSED TAP:
Almost all users reporting that G4 missing many taps to recognize.
My observation:
Well, I have also experienced a few missed taps. But what I think it's not a LCD issue, rather less optimization/smoothness issue of the G4 ROM. How do I know? Well I switched on the touch sound. And every tap I did, including the missed ones, there was tapping sound. Even I tested in the manual testing, nothing reported like that. And even after formatting, symptoms reduced for some. But surely it's very annoying.
Oh one thing about knock codes, I found LG LCD doesn't response to gentlest touches sometimes. You need to press slightly a bit more. Fact to be considered : I am still using the provided plastic protector.
2. LAGGING ISSUE:
There is stuttering here and there in G4, not only in the stock launcher but also in the whole system.
My observations:
No doubt G4 lags. You will notice less smoothness / sluggishness while sliding any page up & down in chrome, youtube, Google plus or anything. It is not "butter smooth" like some other OEMs for most of the users. But switching to Nova, turning off smart bulletin & dual window helped to some extent, but not completely.
3. BATTERY LIFE:
Many of the moderate to heavy users complaining about quick battery drainage with low to medium brightness.
My observations:
LG said many things about their battery life of G4 in their announcement party and many well-known youtubers also said very much positive things about G4's battery life i.e. it can easily last a day which raised up the expectation bar of many users. But the real scenario is quite not like that. Most of the medium to heavy users are getting average 3 - 4.5 hours SOT with keeping screen brightness low to medium which is not at all the way LG mentioned. It seems like LG is providing that extra battery knowing the fact that you will need to put on that extra one at the middle of the day for sure. Anyway, what I found is: G4's stand-by time is OUTSTANDING. Don't turn on that screen much, only receive a few calls, you can pass a decade (not literally) with a single charge. But turn on that screen, do browse, chat, Facebooking or Youtubing or anything keeping that overkill screen on, you will hardly pass 5 hours maximum. Raise the brightness a bit more, like 75-100%, brother, you are doomed. Your G4 will die within hours. For some, turning off auto brightness & keeping the brightness below 50% all the time, turning off fast-dormency, turning off GPS, using Greenify helped a bit. Anyway, my point is that awesome-bright-vivid-overkill screen is actually the curse for the G4 at present if LG doesn't bring up some solutions for it. What's the point if you can not enjoy the juice of a fruit which is known to be the tastiest of them all???
4. HEATING & SLOW CHARGING ISSUE:
Very limited people including mine are complaining of frequent, not consistent, heating up issue of the phone as well as slow charging.
My observations:
Many factors can be responsible for this. Some people find this scenario happening once a day, for some once in two days and these two issues are interconnected in my opinion. What can heat up the phone? May be some hidden apps, maybe weather, maybe some other things, but surely it does for some. Yah we have seen in all the reviews that G4 warms up a bit, but not very much. But the people who are complaining about it, found it uncomfortable to speak touching the phone to the face. I will attach a screenshot here, in which my phone was completely idle, was on charge, no phone call came & my phone got heat up to 42 degrees & it took almost 5 hours to charge from 20 - 100%. Again I am saying this is not a consistent scenario, but it's frustrating for some including mine.
5. OTHER ISSUES:
These are some random issues found by some people:
a) White sparking light in the screen.
b) Yellow tint on screen.
c) Bad bluetooth audio.
d) Wifi speed problem.
e) Helium app doesn't work properly.
f) Nova launcher cannot install properly.
g) Vibration too soft.
h) Auto brightness inconsistancy.
So guys, if you have read it and if you are one of those renowned youtubers or columnists or bloggers whom LG guys follow on regular basis, please make an article or video about it, spread these information and let the LG guys know about these so that they can do something about it. I personally believe, software update can solve 95% of the issues. So be it.
Thanks for your patience to read my post.
I guess I've been pretty lucky thusfar.
Only missed taps I've had is on the double-tap to wake, but I think it might be due to my hardly tapping it (was used to HTC's touch profile last time I had this feature).
No lags here. I did notice that once, when I hit Home button, I returned to a blank home screen and it took about 5 seconds for the icons/widgets to show up...hasn't happened since the one time, though.
Charging, I use the stock charger from my old Note 4, so I get decent times with that (generally 10%-100% in about 50 mins...I'll take that).
As far as battery, I get about 3 hours screen on and 16-18 hours total per charge. Not bad considering I'm a heavy user when the screen is on and stream Spotify via BT speaker 12 hours/day while at work. I've only been through 3 charge cycles so far. It's still not what I was used to with the M8 or Note 4, so I will admit I'd like it to be better.
I think I would go just about nuts if I had any of 5a, b, c, or d. LOL
5d is a huge concern for me. My WiFi speed is complete bollocks. I'm getting a reading of 60mb down from my 5gh router when running speedtest on the phone. But when I actually load a website it's like I'm using dial up again. The load times are atrocious! I'm going to look into changing chanels on my router as someone has mentioned as a fix. Fingers crossed
I haven't had any of those issues. Honestly been flawless so far. Surprised by how smooth it is. I do only get 3 hours sot if I run power intensive apps. But I think that's normal.
The only real issue I've had is **** slowness on Wi-Fi but blazing speed on data
Sent from my G4 using your mom
Wifi speeds are complete crap for me i swear it's like im on dial up waiting for a page to load and forget about getting youtube to load
Th3Bill said:
I guess I've been pretty lucky thusfar.
Only missed taps I've had is on the double-tap to wake, but I think it might be due to my hardly tapping it (was used to HTC's touch profile last time I had this feature).
No lags here. I did notice that once, when I hit Home button, I returned to a blank home screen and it took about 5 seconds for the icons/widgets to show up...hasn't happened since the one time, though.
Charging, I use the stock charger from my old Note 4, so I get decent times with that (generally 10%-100% in about 50 mins...I'll take that).
As far as battery, I get about 3 hours screen on and 16-18 hours total per charge. Not bad considering I'm a heavy user when the screen is on and stream Spotify via BT speaker 12 hours/day while at work. I've only been through 3 charge cycles so far. It's still not what I was used to with the M8 or Note 4, so I will admit I'd like it to be better.
I think I would go just about nuts if I had any of 5a, b, c, or d. LOL
Click to expand...
Click to collapse
Same here. Not sure why there is so much inconsistency between devices. I bought the US trial version, and mine has been relatively good. If I had half of the problems reported I would have sold this thing ASAP and waited for a better crop of devices to come out this fall. I'm one of the few people who really like a stripped down TouchWiz, but with Knox/sealed but not waterproof body/no SD/weak battery the S6 wasn't cutting it. If only Samsung sold the Exynos to these other vendors... For now, I'm fine with the G4, but really hope we get root and unlocked BL so development explodes and the kernel can get tweaked.
Only problem I've had is holding back my enthusiasm about how flawless this phone is ( my wife would try to hijack it if she knew how impressed I am). I do miss 4 buttons on the bottom though
knoshann said:
Only problem I've had is holding back my enthusiasm about how flawless this phone is ( my wife would try to hijack it if she knew how impressed I am). I do miss 4 buttons on the bottom though
Click to expand...
Click to collapse
You can add the 4th button. You can add up to 5. Settings - Display - Home touch buttons - Button combination
Perfect summary.
I've also seen a lot of people saying that they aren't having these problems which can lead to people thinking the phone is perfect, which it's not. I love the screen size and the display but the software is really letting this phone down.
I've experienced many problems too, such as: stuttering, poor battery life at high brightness, brightness dimming down by itself, slow charging, lag and stutter in games, e.g. dead trigger 2 and subway surfers (yes I've turned off game optimiser) and the notification pull down freezing frequently when I get a notification. However, as I saw a lot of people saying that their phones were perfect I chose to exchange my phone instead of return it. My new phone has the exact same problems (uk device on v10a).
Maybe these problems can be fixed with a software update but the question is will it? My G3 lagged and stuttered from the beginning and no software update changed that. The only fix was to switch to a cm12 rom which made the phone finally perform smoothly, at the cost of battery life and camera quality.
It's been at least 3 phones in a row now that have had poor software (g3, g flex 2 and now g4). They're supposed to test their phones before putting them out to consumers but it doesn't seem like they really care so I don't have much hope.
Worst thing is I really want to love this phone and think LG's hardware design is perfect but the software is most likely going to make me sell it.
It might be worth mentioning which version you're on, especially if it's one where the provider (such as VZW) has bogged it down with bloatware. That could conceivably be a contributing factor to battery life issues, if nothing else.
Just a suggestion. Might be a good idea for people to put which model they're on and which Software version they're running.
Like I'm on the H811 running version 81110D. That way, we can see if any issues might be carrier type or software version based...
Just a thought.
Not sure if anyone has mentioned it yet, but on the Sprint model the WiFi randomly turns itself on. I rarely use WiFi, so it's definitely not me turning it on and forgetting that i did or anything.
I was having a issue where my screen Brightness would change on it's own. Tmobile H811 running version 81110D ? I believe that was the version before the update I got and installed on its own last night of H. When I mean change on it's own I had the Screen Brightness on 100% like every other phone and after the few secs when the screen dims and you touch it again the screen brightness would now be set to 70% now 100%. AUTO is off I don't use that.
I will see if this happens on the H update or not.
Ogre6473 said:
Not sure if anyone has mentioned it yet, but on the Sprint model the WiFi randomly turns itself on. I rarely use WiFi, so it's definitely not me turning it on and forgetting that i did or anything.
Click to expand...
Click to collapse
I've actually seen this on the TMO version (8110d). Very sporadic (or it happens more than I realize but I don't spend enough time looking at the phone to notice, not sure which).
I've also seen it randomly turn OFF wifi (just happened 30 seconds ago) for no reason. Interestingly enough THAT one might be oddly due to some weird power saving feature or something as I was just able to reproduce it 3 times in a row turning the screen off and on.
Screen on=wifi on
Screen off=wifi off
Weird stuff.
smw6180 said:
I've actually seen this on the TMO version (8110d). Very sporadic (or it happens more than I realize but I don't spend enough time looking at the phone to notice, not sure which).
I've also seen it randomly turn OFF wifi (just happened 30 seconds ago) for no reason. Interestingly enough THAT one might be oddly due to some weird power saving feature or something as I was just able to reproduce it 3 times in a row turning the screen off and on.
Screen on=wifi on
Screen off=wifi off
Weird stuff.
Click to expand...
Click to collapse
Go into Wi-Fi Settings.
Under Advanced Wifi Settings
In Useful Settings, there is a setting for "Keep Wi-Fi on when screen is off".
It's set to NO by default.
I would imagine it's some sort of power saving feature.
smw6180 said:
I've also seen it randomly turn OFF wifi (just happened 30 seconds ago) for no reason. Interestingly enough THAT one might be oddly due to some weird power saving feature or something as I was just able to reproduce it 3 times in a row turning the screen off and on.
Screen on=wifi on
Screen off=wifi off
Weird stuff.
Click to expand...
Click to collapse
In setting, wifi, advanced there is an option for turning off wifi when the screen is off. Check that and wifi will stay on. Still haven't digured out why it's turning itself on though.
Ogre6473 said:
In setting, wifi, advanced there is an option for turning off wifi when the screen is off. Check that and wifi will stay on. Still haven't digured out why it's turning itself on though.
Click to expand...
Click to collapse
I haven't touched anything in Wi-Fi settings other than setting my passkey and turning "Always allow scanning" off. That setting for Wi-Fi off when screen is off was on when I got the phone. Looks like default position.
It probably doesn't help that they keep losing software engineers at their California office (i work at LG). Senior engineers to make things worse.
The yellow tint on the screen is the part that upsets me the most. The lead-up to the G4's release was all about how superior the screen is to the G3's. Yet the G4's I've received have had yellow tint issue (two of them so far). The screen also appears dimmer than my old G3 at max brightness as well (this is before auto dimming kicks in too.)
There seems to be a rather big shipment of G4's with yellow screens in my area. I've been to 4 different AT&T stores in the past 4 days and have seen at least 5 brand new phones with the yellow tint. It seems to be restricted to the grey metallic retail ones as well. None of the display models or the leather backed ones I've seen thus far as the yellow tint issue. This is in Houston, TX btw. I'm heading to a 5th after work in the hopes of finding a G4 with a non-defective screen.

mapping problems to serial #

i'm wondering if it would be possible to identify problematic batches
of the pixel c to the serial. it has been done before with the nexus
9 that also had a lot of problems at launch.
5A2300 is first 6 digits of my device and i do not not have any issues
although my internet is cap @ 50down/5up. i am curious if there are any
batch differences at this point, or even if there are different batches.
Please report first 5/6 digits of serial, 32GB/64GB, and a concise description
of any issues. thanks.
Edit: i will try to tabulate the results in this post, updating every few days.
-serial----------model-------# report------------- issues reported -------------------- thru post 142
5A190---------[n/a]---------[2]-------[1]had chipped bezel and bad wifi,
--------------[32GB]------------------[2]Distance 12 ft
--------------------------------------Pixel C - 58/64
--------------------------------------iPhone 6s - 58/54
--------------------------------------Nexus 5 - 55/66
--------------------------------------Distance 30 ft + wall
--------------------------------------Pixel C - 58/64
--------------------------------------iPhone 6s - 58/64
--------------------------------------Nexus 5 - 55/66
--------------------------------------Distance 45 ft + 2 walls
--------------------------------------Pixel C - 58/65-68 (3 tests)
--------------------------------------iPhone 6s - 58/15-38 (3 tests)
--------------------------------------Nexus 5 - 55/40-54 (3 tests)
--------------------------------------Welp, seems like my iPhone wifi chip can't push out enough signal
--------------------------------------at the longest distance. My connection is supposed to be 50/50,
-------------------------------------but 55/65 is my typical speed on my PC connected to wifi dongle
------------------------------------at 20 ft. Nexus 5 has a TPU case. iPhone has a plastic polymer + TPU
-------------------------------------case. Pixel C has a standard Smartshell type case for tablets. Router
--------------------------------------is relatively high end (Netgear X4 AC2350) so if this tablet has wifi
-------------------------------------issues, it is being masked by the massive coverage of the router
5A2000-------[32GB]--------------[1]n/a
--------------------------------------[2]No WiFi issues. Massive slowdowns when battery dips below
--------------------------------------20%.
--------------------------------------Only fix I found is to reboot. At first reboot touch screen will
------------------------------------- unresponsive, but a second reboot fixes it.
--------------------------------------I ran an iperf3 test earlier this week. Results are here
-------------------------------------- http://forum.xda-developers.com/showpost.php?p=66276497&postcount=35
--------------------------------------[3] display issue. has a band/shadow that runs the length of the screen. It is especially
---------------------------------------visible when the brightness is low.
--------------------------------------[4] Had the random reboots starting after the May security update. As of today, the
-----------------------------------------screen started acting up where half the screen would be digital "snow" and not
---------------------------------------- refresh even after a full factory reset. Currently in RMA process and new one
---------------------------------------- ordered set to arrive this week.
5A210----------------------------------No issues so far. Wifi about the same as my Nexus 7 and a little
--------------------------------------weaker than my S7.
5A2200-------[64GB]---------[2]-------[1]occasional system lag that clears after a reboot and had a
-------------------------------------------slow
------------------------------------------ WiFi connection until I assigned my Pixel C a static IP address.
------------------------------------------[2]no issues
5A2300-------[64GB]---------[4]-------[1]had occasional touchscreen and keyboard issues
--------------------------------------[2]Slow Wifi on 2.4ghz band. (4x to 10x slower download speeds
--------------------------------------compared to Nexus 6p testing at the same time on the same
--------------------------------------network)
-------------------------------------[3]critical data corruption after a month - device requested
------------------------------------password on boot, confirmed that thepassword correct but it was
------------------------------------unable to decrypt and required factory reset. Following factory
-----------------------------------reset, evice was stuck in a bootloop and could not boot into
-----------------------------------Android Recovery. RMA'd.
-----------------------------------[4]no issues for me either. So far I'm loving it, can't wait to try out N
-----------------------------------[5]5A2300 - fine for first the three months but now the dreaded half
----------------------------------screen freeze fault had started. Definitely a screen hardware issue as
----------------------------------it happens during boot too. Going to RMA
5A2600------------------------------[1]-No issues so far
---------------------------------------[2]- perfect no crashes on MM.
5A2700-------[64GB]---------[1]-------RMA- wifi is not so bad and no problem until now with screen.
------------------------------------------Just one point: it is more yellow than the first one, that was
-------------------------------------------more blue.
5A2800-------[64GB]---------[2]-------[1]Compared to my nexus 6p, wifi range/speed is not as good,
--------------------------------------------not a real problem for me as I can go around my whole
-------------------------------------------apartment without it the dropping connection.
-------------------------------------------I have had it for 24 hours, and have not seen any keyboard
-------------------------------------------problems.
------------------------------------------Will update if I see any problems.
------------------------------------------[2] no wifi or screentouch issues. Perfect quality.
5A290--------[64GB]---------[2]-------[1]No issues at all. At initial start Touch not responsive as
-------------------------------------------expected....but after update gone and no issues with wifi or lag.
------------------------------------- -----[2]Touchscreen issues after reboot/crash (fixed by booting to
-------------------------------------------safemode and leaving the table on/standby all the time) slow
------------------------------------------ wifi depending on the distance from the router
------------------------------------------auto-brightness appears to cause random crashes
5A300--------[32GB]---------[2]-------Both had wifi download issues and this second one has now
------------------------------------------developed a nice case of the touchscreen jitters. (fixed by
------------------------------------------booting into and back out of safe mode)
5B020--------[xxxx]---------[2]-------Wifi dropping [fix].http://forum.xda-developers.com/pixel-c/help/slow-wifi-speeds-t3269506/post64398251#post64398251
--------------------------------------physically perfect but same bad wifi
5B0300-------[32GB]---------[1]-------ordered from Canada (shipped from Mississauga, ON) RMA'd
-------------------------------------------last Friday because had to reboot tablet (froze) and upon
------------------------------------------ reboot, persistent screen issues as reported by
-------------------------------------------many (swipes registered as tap, impossible to use multi fingers
------------------------------------------as 2nd finger is registered on and off, screen bounces back in
------------------------------------------opposite direction of swipe,etc.). No issues connecting to WiFi,
------------------------------------------5Ghz speeds are decent, 2.4Ghz speeds are ridiculous
-----------------------------------------1-2 Mbps downloads in the same room as router, few feet away).
-----------------------------------------Range of WiFi also seems to be much less than any other I tried
-----------------------------------------(Macbook Pro, iPad 3, One m8, Xperia Z3) receiving
---------------------------------------- RMA unit tomorrow (Dec 22nd) will update post.
5B0400-------[32GB]---------[4]-------[1]good WiFi and good screen, no problems.
-------------------------------------------[2]no issues so far, will report.
-------------------------------------------[3]Last update on my 5B0400:
------------------------------------------DEAD, hard drive corrupted after 6 days of use.(see post on
------------------------------------------troubleshoot subforum) Returned it to Google Store within
------------------------------------------Buyer Remorse Period..
-----------------------------------------The pixel c is so far the most unreliable device i've had. I never
-----------------------------------------had these problems with my previous nexus 10.
-----------------------------------------[4] poor bluetooth range. clear line of sight is 10 feet.
-----------------------------------------[5] Wifi bug ==> rma !
5B0500-------[32GB]------------------[1]aside from the fact that the Pixel C seems to have the worst
-------------------------------------------WiFi antenna in the known universe, this one has been flawless
------------------------------------------so far. Not one single unexpected reboot
------------------------------------------[2] display issue. complete right side of display is defective.
5B1200-------[64GB]---------[3]-------[1]good WiFi, good screen, no KB to test
-------------------------------------------[2]Mine has the dropping wifi issue. It also has some problems
------------------------------------------to recognize touches and gestures. The gravity of this issue
------------------------------------------varies alot. The third day using the Pixel C was the worst. Later
------------------------------------------it became better, but it still isn't perfect. Aditionally sometimes
------------------------------------------I'm not able to wake the tablet after it was idle
-----------------------------------------for some time. In this case I have to force reboot it.
-----------------------------------------Happend about four times now (using the Pixel C for two
----------------------------------------- weeks). Gonna return it after the holidays.
----------------------------------------[3]did not even want to turn on past the bootanimation. RMA is
---------------------------------------under way
5B1400-------[xxxx]---------[1]-------Keyboard is a big lagging yes, but for example, more on Firefox
-----------------------------------------than on Gmail.
-----------------------------------------My router is a Sagem Livebox Play (french people will see...)
-----------------------------------------I have, at best, 17/18m for the internet.
-----------------------------------------I did few tests, with Wifi Analyzer, Speedtest and speedof.me :
-----------------------------------------on 2,4Ghz, Pixel C is bad in my bedroom, 8m from router. It has
--------------------------------------- -70db signal, same as my old
-----------------------------------------Nexus 4. The N4 keeps a 12/13m speed, the Pixel barely hits 2m.
----------------------------------------Oh, and it doesn't finish the speedof.me test. Next to the router
---------------------------------------reaches 15m speed (speedtest) but... goes down
--------------------------------------after 5s around 3m. The speedof.me test
--------------------------------------gives me between 2 and 3m.
--------------------------------------on 5Ghz... Pixel C reaches 17m speed on speedtest, on speedof.me,
--------------------------------------ANYWHERE in the flat, even with -70db
5B1600---------[32GB]-------[1]------My replacement Píxel 32GB has the serial number 5B1600.arrived
-----------------------------------------today, no issues yet.
-----------------------------------------Does not have the screen clicking noise my previous píxel had.
-----------------------------------------It seems i have the first 5B1600 here, I hope it does not have
----------------------------------------issues
5B1700-------[32GB]---------[3]------[1]They both have same problem couldn't connect to 5ghz
-----------------------------------------network unless i change router to channel 44, which I've never
-----------------------------------------had to do with any of my 5 nexus devices. The range on it is also
----------------------------------------shocking. I did a comparison to my nexus 6 and nexus 10 and the
----------------------------------------pixel couldn't get the 5ghz in my room but the other two
----------------------------------------devices could and on 2.4. the pixel would only get half
----------------------------------------strength where the other two would be full. My room is not 4
---------------------------------------meters from-the router. Asus rt-68u.
---------------------------------------[2]random reboots. Many many reboots on M, and a few on N2
---------------------------------------Wiped the device and set up as a fresh device, but still get
---------------------------------------random reboots.
---------------------------------------[3] display issue, color banding on all backgrounds.
5B190----------[64GB]---------------LEDs on the cover are different brightness and occasionally get
----------------------------------------terrible screeching feedback when making calls via VOIP.
5B2000-------[64GB]---------[1]-------wifi is not bad but touchscreen problems come after +/- 2 days
----------------------------------------of normal use. After a reboot in safe mode, problems disappear
---------------------------------------for 2 days..
5B2300-------[64GB]---------[2]-------both touchscreen and wifi issues present Slow Wifi on 2.4ghz
-------------------------------------------band. (4x to 10x slower download speeds compared to Nexus
--------------------------------------------6p testing at the same time on the same network)
5B2400-------[32GB]---------[1]-------1) Slow Wifi Problem: Through Walls (193ms, 2.59mbps down,
-------------------------------------------7.88mbps up) compared to a Nexus 6
-------------------------------------------(3ms, 29.5mbps down, 51.79mbps up)-Of course, the Pixel C
-------------------------------------------software related performance issues are here. Regarding
------------------------------------------touchscreen responsiveness, I haven't felt any missed touches
-----------------------------------------however the touch gestures don't seem to be optimized for
----------------------------------------the Pixel C at all.
5B2500-------[32GB]---------[1]-------OK with 2 walls between tablet and wifi access point i have
------------------------------------------problems
-------------------------------------------Speedtest:
-----------------------------------------------------Ping-------------Download--------------Upload
--------------------------------------Htc one m8-------5-------------------41,7-------------------11,1
--------------------------------------Nexus 10 --------5-------------------50,1-------------------11,1
--------------------------------------Pixel C----------6-------------------20,8-------------------10,8
--------------------------------------Edit: The Pixel C also needs a lot more time to connect with wifi
5B300--------[32GB]---------[2]-------[1]have touch screen issues like swipes responding as touches
------------------------------------------and when they do swipe it's chittery, but Wi-fi speed is fine.Wi
-----------------------------------------Fi Speed test: http://i.imgur.com/ODqXJoH.png I'm 2
-----------------------------------------floors away from my router btw on 5Ghzs Touch screen is my
-----------------------------------------main issues
-----------------------------------------[2]no random reboots on MM.Many Many reboots on N2
610700--------------------------------no problems. Android 6.0.1 - March Patch.
612300--------------------------------No touchscreen issue (after I updated from stock). WiFi was
---------------------------------------never an issue, even in the upstairs room on the other side of the
---------------------------------------house away from the router where my nexus 10 struggled. As for
--------------------------------------the corrupt hd issues, I have a feeling it has something to do
--------------------------------------with magnets, but I don't have the keyboard and I don't
---------------------------------------plan on testing that theory. Fwiw I'm running the n preview and
---------------------------------------everything has been great aside from the expected bugs on the os
---------------------------------------side of things.
61250--------------------------------yellow tint bottom of screen.
612600 -------(64GB) -------------Perfect device, Wifi is OK, screen is OK.
6127----------------------------------Received mine 2 hours ago. It's a 64GB I still need tot try it out
--------------------------------------and test.Speedtest was promising
--------------------------------------with 25Mbps higher then my Nexus 10
--------------------------------------I have very mixed results going from 173Mbps to 6Mbps.
--------------------------------------1st try 10m with 2 doors in between @ 37Mbps.
--------------------------------------2nd try @ 84Mbps.
--------------------------------------1st try upstairs around 10m @ 34Mbps
--------------------------------------2nd try @ 69Mbps
--------------------------------------Upload speed is capped with my ISP at 12Mbps so I always get this
--------------------------------------speed
61300 --------------------------------Perfect. No gaps or creaking and wifi is fine. Success at last.
620100--------------------------------gap between glass and metal case under the power button,
----------------------------------------except this one is longer along that top edge before it meets like
----------------------------------------it does around the rest of the tablet. Google escalated...
--------------------------------------Will see what happens. Otherwise, fine with wifi and no screen
---------------------------------------issues or clicking!
6202000xx------[32GB]--------[3]------[1]Perfect. No WiFi issues, no touchscreen issues. I have
--------------------------------------------noticed chrome fails to scroll a pasge sometimes, -but that's a
--------------------------------------------browser bug, not a touchscreen bug.
--------------------------------------------[2] No issues
--------------------------------------------[3] 64GB. wifi issue. also clicking sounds from pressing on display.
-------------------------------------------[4] - random reboots, RMA
62030---------------------------------I've just got a 32gb in UK with dev discount C1502W 62030 no
----------------------------------------issues so far with 2 days of use as tablet only no keyboard. It's a
----------------------------------------monster eats media and web pages all day long like nothing
----------------------------------------happened!
Miscellaneous Comments----------------Router in the basement, so through one floor and its in a
-----------------------------------------------separate closed room. Pixel C 22 ms, 5.1 MBS dwn, .73 mbs
-----------------------------------------------up. Nexus 6p, 19 ms, 5.9 MBS down, .68 mbs up.
-----------------------------------------------Yes my DSL sucks as I'm in the country. But my Pixel that
-----------------------------------------------arrive today does not seem to have the WiFi issue.
It certainly feels like most if not all have wifi and or touchscreen issues but I'll throw down:
1st Pixel C 32GB: 5A300
2nd Pixel C 32GB: 5A300
Both had wifi download issues and this second one has now developed a nice case of the touchscreen jitters. (fixed by booting into and back out of safe mode)
I wonder if the Pixel team is the party rerouting the RMAs once they get with UPS. They need to do something here...
atg284 said:
It certainly feels like most if not all have wifi and or touchscreen issues but I'll throw down:
1st Pixel C: 5A300
2nd Pixel C: 5A300
Both had wifi download issues and this second one has now developed a nice case of the touchscreen jitters. (fixed by booting into and back out of safe mode)
I wonder if the Pixel team is the party rerouting the RMAs once they get with UPS. They need to do something here...
Click to expand...
Click to collapse
is that a typo up there? sure it is not 5A230? just asking since it is close.
dkryder said:
is that a typo up there? sure it is not 5A230? just asking since it is close.
Click to expand...
Click to collapse
Nope! No typo and I did find it a bit odd that ours are different this early on. I saved my RMA conversation with the google rep and that is how I confirmed my past serial number. So both of mine came from the same batch.
Is yours 32GB or 64GB? Perhaps that is it.
5A2300 here as well. I've had occassional touchscreen and keyboard issues. Haven't seen any problems with Wi-Fi as of yet, although that doesn't mean they don''t exist. I just might not have noticed them.
64GB model, if that makes a difference.
5A2000 32GB here. No problems with wifi or touchscreen.
5A2200 64GB
I have the occassional system lag that clears after a reboot and had a slow WiFi connection until I assigned my Pixel C a static IP address. I can't remeber where it shipped from.
atg284 said:
Nope! No typo and I did find it a bit odd that ours are different this early on. I saved my RMA conversation with the google rep and that is how I confirmed my past serial number. So both of mine came from the same batch.
Is yours 32GB or 64GB? Perhaps that is it.
Click to expand...
Click to collapse
64GB model
atg284 said:
It certainly feels like most if not all have wifi and or touchscreen issues but I'll throw down:
1st Pixel C: 5A300
2nd Pixel C: 5A300
Both had wifi download issues and this second one has now developed a nice case of the touchscreen jitters. (fixed by booting into and back out of safe mode)
I wonder if the Pixel team is the party rerouting the RMAs once they get with UPS. They need to do something here...
Click to expand...
Click to collapse
it seems google is definitely re routing to get a closer look at the units. i want this device to succeed so it is crystal clear that google needs get hands on and try to
figure out what the problems are, what needs to be done to get it fixed and try to keep as many of those who bought the unit happy.
dkryder said:
it seems google is definitely re routing to get a closer look at the units. i want this device to succeed so it is crystal clear that google needs get hands on and try to
figure out what the problems are, what needs to be done to get it fixed and try to keep as many of those who bought the unit happy.
Click to expand...
Click to collapse
Very true! They have until the 21st of January for me.
Mine is 5B020
I only had wifi dropping issues which I've explained in the other thread how I fixed it.
Sent from my iPhone using Tapatalk
5B2500 32 gb
no problemms
5B0400
32GB good WiFi and good screen, no problems.
Sent from my Pixel C using Tapatalk
5B1200 64GB - good WiFi, good screen, no KB to test
Gesendet von meinem Pixel C mit Tapatalk
To you guys and gals with good wifi, are you testing this from around 20-30 feet away on a different floor and or rooms away? The wifi issue is only at a reasonable distance through a wall or two or a floor. Again, away from the router and not close to it. Thanks for any info.
5B2000 - 64Gb - wifi is not bad but touchscreen problems come after +/- 2 days of normal use. After a reboot in safe mode, problems disappear for 2 days...
Envoyé de mon SGP621 en utilisant Tapatalk
5A290 64GB model. No issues at all.
At initial start Touch not responsive as expected....but after update gone and no issues with wifi or lag.
5B2300 64GB both touchscreen and wifi issues present
First one 5A190 had chipped bezel and bad wifi, second one 5B020 physically perfect but same bad wifi ...
5A2800 on RMA'ed device, thus far I get slower download speeds issue (for lack of better words) but thus far no touchscreen issues, although I have kept the device in landscape since getting this as that appears to be a possible root cause.
The original was a 5A110 and has terrible touchscreen issues, out of the box really

V20 screen shadowing

I have an issue on my V20. There is shadowing screen on top area, such as shadow of signal or battery icon. Anyone have same issue
hi. sometimes it happens for me and many others too . if you don't Root your phone ,whenever it accrues , i recommend you stop using your phone and let it to be cool and it will be disappeared. you can either use app Nightly from Play Store, set to 75% and ghosting effect disappear.
this problem arise from IPS technology that is used in this type of phones .
these links is useful discussions :
https://forum.xda-developers.com/v20/help/image-retention-t3577992
https://forum.xda-developers.com/v20/help/how-to-fix-lg-v20-screen-burn-t3658844

Categories

Resources