Samsung Tab A (SM-T285) Wifi constantly disconnecting-reconnecting - Samsung Galaxy Tab A series Questions & Answers

Hello Guys, I'm not sure if this is the right forum to ask something like this, so apologies if I'm asking in the wrong place, but I've searched a lot the past days and haven't found a solution yet :/
Less than a week ago, I bought a Samsung Galaxy Tab A6 (SM-T285) 7" LTE, and pretty much since day one, the tablet keeps disconnecting and reconnecting on every wi-fi I tried so far (3-4 different networks). I lose my connection for a couple seconds, causing any app running to lag a bit, then the notification that I have been connected to (the same) wi-fi comes up, and it starts working again. I googled a bit and tried using WPS button, Keep Wifi on during sleep, always allow scanning, even turned flight mode on, but the problem remains. Also, googling usually returned solutions that were aimed towards the router, although I'm pretty sure it's something to do with the tablet, since it's not just on one router. I'm at a loss on how to fix this and the only thing I can compe up with atm is to try a factory reset, which is weird, since the problem was with the tablet literally from the beggining. Any help will be appreciated! Thanks in advance

AntJPGR said:
Hello Guys, I'm not sure if this is the right forum to ask something like this, so apologies if I'm asking in the wrong place, but I've searched a lot the past days and haven't found a solution yet :/
Less than a week ago, I bought a Samsung Galaxy Tab A6 (SM-T285) 7" LTE, and pretty much since day one, the tablet keeps disconnecting and reconnecting on every wi-fi I tried so far (3-4 different networks). I lose my connection for a couple seconds, causing any app running to lag a bit, then the notification that I have been connected to (the same) wi-fi comes up, and it starts working again. I googled a bit and tried using WPS button, Keep Wifi on during sleep, always allow scanning, even turned flight mode on, but the problem remains. Also, googling usually returned solutions that were aimed towards the router, although I'm pretty sure it's something to do with the tablet, since it's not just on one router. I'm at a loss on how to fix this and the only thing I can compe up with atm is to try a factory reset, which is weird, since the problem was with the tablet literally from the beggining. Any help will be appreciated! Thanks in advance
Click to expand...
Click to collapse
I haven't really encountered that problem on my device. If you still have problems with the device after factory reset I suggest you try to get a replacement and see if it fixes it. You can also test if the problem goes away if your device is the only one connected to the router or setup a static IP. You can also post a logcat during the interruption so that we can get a better a handle on what is happening.

AntJPGR said:
Hello Guys, I'm not sure if this is the right forum to ask something like this, so apologies if I'm asking in the wrong place, but I've searched a lot the past days and haven't found a solution yet :/
Less than a week ago, I bought a Samsung Galaxy Tab A6 (SM-T285) 7" LTE, and pretty much since day one, the tablet keeps disconnecting and reconnecting on every wi-fi I tried so far (3-4 different networks). I lose my connection for a couple seconds, causing any app running to lag a bit, then the notification that I have been connected to (the same) wi-fi comes up, and it starts working again. I googled a bit and tried using WPS button, Keep Wifi on during sleep, always allow scanning, even turned flight mode on, but the problem remains. Also, googling usually returned solutions that were aimed towards the router, although I'm pretty sure it's something to do with the tablet, since it's not just on one router. I'm at a loss on how to fix this and the only thing I can compe up with atm is to try a factory reset, which is weird, since the problem was with the tablet literally from the beggining. Any help will be appreciated! Thanks in advance
Click to expand...
Click to collapse
I get the same issue on my T280, highly annoying.
It seems better since the latest update, it's done this since day 1.

ashyx said:
I get the same issue on my T280, highly annoying.
It seems better since the latest update, it's done this since day 1.
Click to expand...
Click to collapse
@ashyx
Try to re-flash your firmware and then install root. There is an application that grasps the Wi-Fi, so it doesn't disconnect and reconnect everytime.
---------- Post added at 11:00 PM ---------- Previous post was at 10:58 PM ----------
ashyx said:
I get the same issue on my T280, highly annoying.
It seems better since the latest update, it's done this since day 1.
Click to expand...
Click to collapse
@ashyx
Also, if you don't want to root and just stay in stock firmware, then go to this link (it is from a Samsung Moderator and yes, it is official): http://support-us.samsung.com/cyber...7407616!1470947554734&from_osc=&homeid=342384
Solution brief statement:
- disable Connectivity Monitor and Wireless Uplink
- set the AP is set on fixed channels
- run the lastest stable upgrade of both AP and Controller

ParadoXGodzillA said:
@ashyx
Try to re-flash your firmware and then install root. There is an application that grasps the Wi-Fi, so it doesn't disconnect and reconnect everytime.
---------- Post added at 11:00 PM ---------- Previous post was at 10:58 PM ----------
@ashyx
Also, if you don't want to root and just stay in stock firmware, then go to this link (it is from a Samsung Moderator and yes, it is official): http://support-us.samsung.com/cyber...7407616!1470947554734&from_osc=&homeid=342384
Solution brief statement:
- disable Connectivity Monitor and Wireless Uplink
- set the AP is set on fixed channels
- run the lastest stable upgrade of both AP and Controller
Click to expand...
Click to collapse
Not sure what you're trying to advise here or why you're advising to flash stock firmware and root?
Also the link to the knowledge base solution doesn't work as its session key has expired.

ashyx said:
Not sure what you're trying to advise here or why you're advising to flash stock firmware and root?
Also the link to the knowledge base solution doesn't work as its session key has expired.
Click to expand...
Click to collapse
What do you mean "Also the link to the knowledge base solution doesn't work as its session key has expire."? I have just checked the website and the session key has not expired and it still works for me.

ParadoXGodzillA said:
What do you mean "Also the link to the knowledge base solution doesn't work as its session key has expire."? I have just checked the website and the session key has not expired and it still works for me.
Click to expand...
Click to collapse
Never mind got it working by using a different browser.
Thanks for posting it, but Samsung's 'solution' [emoji55] is to simply disconnect and reconnect the wifi which I have already tried.
It's related to the device not the network as I don't have any issue with any of my other devices on the same network.
Maybe if they'd release some source code that actually worked I might be able to do something about it instead of them refusing my request.

ashyx said:
Never mind got it working by using a different browser.
Thanks for posting it, but Samsung's 'solution' [emoji55] is to simply disconnect and reconnect the wifi which I have already tried.
It's related to the device not the network as I don't have any issue with any of my other devices on the same network.
Maybe if they'd release some source code that actually worked I might be able to do something about it instead of them refusing my request.
Click to expand...
Click to collapse
Ok, if I find a solution, I'll be sure to tell you.

+1 I'm also getting this issue like crazy on my T280
Sent from my SM-T280 using Tapatalk

Mine too. I have the T280, Best Buy has the T350 for $20 more. Has dual band wifi. Might try exchange it, but I rooted it already. Can I go back to stock without them knowing?

I was dealing with this issue although it was never more than an annoyance because it never actually interrupted my wifi connection, it just showed the little toast message that said it reconnected
I somehow magically got the device to stop doing this and I don't know exactly what fixed it, but I think the step that did it was flashing the stock firmware to the device. After that, it never seemed to have the annoying bug again.
The other things that could have done it relate to installing root and using Link2SD to disable some bloatware and moving all user apps to the SD card, but my guess is the fix came from flashing the stock ROM

I have the same problem with SM-T280 (T280XXU0AQA4), tried many wireless network and I have always disconnections. There is a solution for this problem?
ashyx said:
I get the same issue on my T280, highly annoying.
It seems better since the latest update, it's done this since day 1.
Click to expand...
Click to collapse
Also for me since day 1

I have the exact same issue with my A6 10.1.
Posted about it a while back, I tried a factory reset, i tried clearing the cache. I took it to the service centre who did a complete software rebuild. I reset my router to factory and gave the tablet a static ip address. In the end I got a replacement, the replacement has the exact same issue. A friend bought the tablet the same day I did and has the exact same issue, they also got a replacement, their replacement also has the issue. So that's 4 out of 4.
Samsung couldn't care less, I've called customer service who suggested taking it to the service centre or getting a replacement, both things I've done. I've emailed and received nothing but generic cut and paste replies telling me to factory reset and clear the cache partition. I'm over my 30 days and can't return it. So I have a lovely paper weight and I'm back to using my iPad 3 because it may be slow as anything but at least it stays connected to wifi.

Jerri1240 said:
I have the exact same issue with my A6 10.1.
Posted about it a while back, I tried a factory reset, i tried clearing the cache. I took it to the service centre who did a complete software rebuild. I reset my router to factory and gave the tablet a static ip address. In the end I got a replacement, the replacement has the exact same issue. A friend bought the tablet the same day I did and has the exact same issue, they also got a replacement, their replacement also has the issue. So that's 4 out of 4.
Samsung couldn't care less, I've called customer service who suggested taking it to the service centre or getting a replacement, both things I've done. I've emailed and received nothing but generic cut and paste replies telling me to factory reset and clear the cache partition. I'm over my 30 days and can't return it. So I have a lovely paper weight and I'm back to using my iPad 3 because it may be slow as anything but at least it stays connected to wifi.
Click to expand...
Click to collapse
It may not be Samsung's problem but the place where you bought your tablet from. You might have to reflash it to stock (the ODIN way or the Samsung Smart Switch way). Some stores refurbish items and just take the same item repackage after thinking that it is okay to use because they just hook up the tablet to the computer without it actually connecting to the wifi.
If you want to do the ODIN way, you should try going to www.updato.com and find your software and device number and install it. There will be a guide there.
If you want to do the Samsung Smart Switch way, just go download it for the PC and it should tell you how to do it. (YOU NEED YOUR DEVICE NUMBER AND SERIAL NUMBER!)
Or if it still doesn't connect online, it might be because the host file is messed up. It is located in ./system/etc./host
I'm not sure but you should be able to find it through ES File Explorer.

ParadoXGodzillA said:
It may not be Samsung's problem but the place where you bought your tablet from. You might have to reflash it to stock (the ODIN way or the Samsung Smart Switch way). Some stores refurbish items and just take the same item repackage after thinking that it is okay to use because they just hook up the tablet to the computer without it actually connecting to the wifi.
If you want to do the ODIN way, you should try going to www.updato.com and find your software and device number and install it. There will be a guide there.
If you want to do the Samsung Smart Switch way, just go download it for the PC and it should tell you how to do it. (YOU NEED YOUR DEVICE NUMBER AND SERIAL NUMBER!)
Or if it still doesn't connect online, it might be because the host file is messed up. It is located in ./system/etc./host
I'm not sure but you should be able to find it through ES File Explorer.
Click to expand...
Click to collapse
Thanks but I took it to the local service centre who reflashed the firmware and it made no difference. Support told me it's a known software issue but they don't know when or even if a fix will be released.
It connects to the wifi fine, it just drops connection constantly, it shows as connected and I'm sat less then three feet from my router but try streaming or opening play store and it says no connection retry. Then you have to wait until it decides to work again, sometimes that's seconds, sometimes a few minutes. Sometimes you have to manually disconnect and reconnect wifi or turn the device off then back on. Rince and repeat.
I'll download smart switch and give it a go but I don't see it helping to be honest.

Jerri1240 said:
Thanks but I took it to the local service centre who reflashed the firmware and it made no difference. Support told me it's a known software issue but they don't know when or even if a fix will be released.
It connects to the wifi fine, it just drops connection constantly, it shows as connected and I'm sat less then three feet from my router but try streaming or opening play store and it says no connection retry. Then you have to wait until it decides to work again, sometimes that's seconds, sometimes a few minutes. Sometimes you have to manually disconnect and reconnect wifi or turn the device off then back on. Rince and repeat.
I'll download smart switch and give it a go but I don't see it helping to be honest.
Click to expand...
Click to collapse
Try rooting your device and then check your hosts file and fix it. Sometimes, after when I installed Freedom (In-App purchase hack) it updates the Host file to disable it to connecting to the Internet. It should only say 127.0.0.1 Host, not something like app referrer: 108.xxx.xxx

ParadoXGodzillA said:
Try rooting your device and then check your hosts file and fix it. Sometimes, after when I installed Freedom (In-App purchase hack) it updates the Host file to disable it to connecting to the Internet. It should only say 127.0.0.1 Host, not something like app referrer: 108.xxx.xxx
Click to expand...
Click to collapse
Thanks but I honest'y can't be bothered with it anymore. As I said myself and a friend got the same tablet, we've both had the same issues, we both got replacements, both the replacements have the exact same issue and I assume it's massively unlikely all 4 tablets have host file issues. I've wasted hours of my life on this (resetting my router to factory for some reason caused my wifi printer to flail which took 4 days to fix). I've not rooted it and haven't installed anything that should mess with the host file.
I may change my mind and give it a go one day when I'm bored. I assume rooting doesn't invalidate the warranty/trip the knox etc?
I ran smart switch last night, backed up, reinstalled the sofrware then restored from backup. Only the backup didn't restore all the app settings, so it removed all the progress on the games I had been playing.

Jerri1240 said:
Thanks but I honest'y can't be bothered with it anymore. As I said myself and a friend got the same tablet, we've both had the same issues, we both got replacements, both the replacements have the exact same issue and I assume it's massively unlikely all 4 tablets have host file issues. I've wasted hours of my life on this (resetting my router to factory for some reason caused my wifi printer to flail which took 4 days to fix). I've not rooted it and haven't installed anything that should mess with the host file.
I may change my mind and give it a go one day when I'm bored. I assume rooting doesn't invalidate the warranty/trip the knox etc?
I ran smart switch last night, backed up, reinstalled the sofrware then restored from backup. Only the backup didn't restore all the app settings, so it removed all the progress on the games I had been playing.
Click to expand...
Click to collapse
Root does trip your warranty and it is a pain in the but when you are trying to install applications like Oasis's Island app because it knows if you had a "modified" OS. So, you have to be careful on what kind of application you still want to use.
If you can get another replacement or exchange, reset your device and then hand in to the store for a SM-T350 or some other device.
I know that SM-T350's are good for games and other content like watching videos.
Hope I helped and I wish you the best of luck.

The T280/T285 doesn't have knox, so nothing to trip.

Can confirm reflashing stock did not fix it on my t280. Starting to think the only fix is to get a different tablet...

Related

[RESOLVED] Stock HTC Hero WiFi issues

So I UNrooted my phone back to default factory (flipz RUU 156) and when I turn my WiFi on it stays up for about 10 mins, then goes down. And sometimes when I turn the WiFi on it does not turn on at all. Has my HERO gone bad? Should I get a replacement?
*UPDATE* 2/24/2010
Wow..... I might have solved this once and for all.....
go to WIRELESS CONTROLS > WI-FI Settings > ADVANCED (CLICK MENU TO BRING UP ADVANCED) > WI-FI sleep policy > NEVER
(Power off your phone, turn it back on and you should be good to go)
Wow... i guess the default setting is "WHEN SCREEN TURNS OFF"
If that's not the default settings, then I don't know why the hell mine was on that.... Anyways, I think this will FIX WI-FI issues...
Let me know....
*UPDATE* 2/26/10
I am setting this thread to RESOLVED. If this does not fix your WIFI issues, let me know and I will take this off being resolved.
If you do go for a replacement, I recommend you go through insurance and pay the 100 dollar deductible. New policy at sprint, if we do a free exchange and then find out it was damaged/modded, 500 dollar charge to your account as of 2-17.
sirstanley said:
If you do go for a replacement, I recommend you go through insurance and pay the 100 dollar deductible. New policy at sprint, if we do a free exchange and then find out it was damaged/modded, 500 dollar charge to your account as of 2-17.
Click to expand...
Click to collapse
source?
1234567890
sirstanley said:
If you do go for a replacement, I recommend you go through insurance and pay the 100 dollar deductible. New policy at sprint, if we do a free exchange and then find out it was damaged/modded, 500 dollar charge to your account as of 2-17.
Click to expand...
Click to collapse
Source? Link?
I just recieved the email this morning. And I can't link to Sprint Knowledge Management System documents. There was a max fee of 200 dollars for non-returned or damaged phones when a warranty exchange is done. As you know, a warranty exchange can only be done if it's a device issue, not caused by water damage, physical damage, or flashing (as we all know, that voids the warranty). Since the phones are getting so expensive and so many people want free phones, the maximun fee for a non-returned or non-warranty covered device exchange has been increased to 500 dollars (dependendant upon model of phone) as of 2-17. Of course, they usually just check for red stickers and cracked screens and what-not, I just wanted to put it out there that it might be a safer bet just to go through insurance.
lets be honest here though, there are certain foolproof ways around that. Besides, nobody is actually investigating with these phones. They MIGHT turn it on (big if), look for the sprint bootscreen, the stock homescreen, and say everything is fine.
entropism said:
lets be honest here though, there are certain foolproof ways around that. Besides, nobody is actually investigating with these phones. They MIGHT turn it on (big if), look for the sprint bootscreen, the stock homescreen, and say everything is fine.
Click to expand...
Click to collapse
Well I did a factory settings reformat using RUU.. So I don't need to worry about this....
Wasnt trying to scare anyone, just letting you know we have a new policy. And correct, the drones who recieve the defective phone turn them on, hard reset, check for and hardware issues, fix them, then we send them out as relpacements. I know we dont get too deep into the phone because we often send people phones that still have IT policies on them that don't allow them to sync and go to certain websites.
Anyways... Back to the topic...
How can I test if my WIFI has gone bad or not... I thought it was because I was on a custom ROM that my WIFI would not work properly... So I UNROOTED my phone, I am back on defaults, yet I still have WIFI issues...
Ok, have you tried unchecking Mobile Network when using wifi? just a thought. Is this on any wireless network you attempt to connect to, or just one at your home? Do you recieve any kind of error message? If you get me the specifics I'll run it through the think tank here at Sprint (which is composed of me and two other guys) and see if we can re-create using one of our test phones.
sirstanley said:
Ok, have you tried unchecking Mobile Network when using wifi? just a thought. Is this on any wireless network you attempt to connect to, or just one at your home? Do you recieve any kind of error message? If you get me the specifics I'll run it through the think tank here at Sprint (which is composed of me and two other guys) and see if we can re-create using one of our test phones.
Click to expand...
Click to collapse
Yes, I disable mobile network, then enable WIFI. At home, it picks up my network but my WIFI disables after 10 mins. At work, my wifi is enabled, but never finds a network...
Ok, never heard of a wifi problem on the hero, gonna grab a test phone and see if I can F*ck it up.
Mine is acting weird lately also. Before my WIFI worked great until I started to root it. After that it was never the same. Sometimes it works sometimes it doesn't. At home for some reason I can't connect to my routers. I have never changed the settings of them. So if I go to a WIFI hot spot it works just fine? Weird!
Were you having problems before you started rooting and flashing your device? If not, try re-installing the original 1.29.xx RUU, or try reflashing the version you just put on there. Sometimes weird things happen, and the only way to fix is to reinstall.
keeneraver said:
Were you having problems before you started rooting and flashing your device? If not, try re-installing the original 1.29.xx RUU, or try reflashing the version you just put on there. Sometimes weird things happen, and the only way to fix is to reinstall.
Click to expand...
Click to collapse
I am back on factory settings.... Honestly, I never tried the wireless when I bought the phone... I only started using it after I ROOTED my phone... so =\
I did the whole factory reset already. Reflashed with the ruu rom and still no go. I think I stumble into something here as of yesterday though. I was at my friends house and WIFI works great there. So I'm assuming my routers need to be reconfigured for my mac address or something. I can't explain it I have never heard of this before but thats what I think it is. Also maybe the rom upgrade changes the radio which might change mac addresses right? IDK just thinking here. Peace, Thanks.
chags007 said:
I did the whole factory reset already. Reflashed with the ruu rom and still no go. I think I stumble into something here as of yesterday though. I was at my friends house and WIFI works great there. So I'm assuming my routers need to be reconfigured for my mac address or something. I can't explain it I have never heard of this before but thats what I think it is. Also maybe the rom upgrade changes the radio which might change mac addresses right? IDK just thinking here. Peace, Thanks.
Click to expand...
Click to collapse
Same here... Maybe it does have something to do with the MAC ADDRESS... who knows... blah....
ok... SO I might have better info now....
My wifi turns on when I click the WIFI button, I see the ICON on the top taskbar and everything... But as soon as my phone goes IDLE (which I have it set to 30 seconds or 1 min) as soon as I bring it back up, the WIFI is gone...
So maybe now someone can help me...
Wow..... I might have solved this once and for all.....
go to WIRELESS CONTROLS > WI-FI Settings > ADVANCED (CLICK MENU TO BRING UP ADVANCED) > WI-FI sleep policy > NEVER
(Power off your phone, turn it back on and you should be good to go)
Wow... i guess the default setting is "WHEN SCREEN TURNS OFF"
If that's not the default settings, then I don't know why the hell mine was on that.... Anyways, I think this will FIX WI-FI issues...
Let me know....
I had the same issue on a mixed-mode 802.11g/n DLINK AP. I changed the mode to G only. Also, one of the wifi scanners in the market rates AP 802.11g channels from 1-11 telling you the best to use. May want to look in that direction too. My router had a channel auto-scan mode which I turned off and hard coded the highest ranked channel from the wifi app. After I made these two changes, I haven't had any discos.
BTW: My router logs showed "Client disconnected: Deauthentication" until I made those two changes (no more mixed mode and a hard coded channel).
Hope this helps.

[Q] Verizon Setup Wizard?

So yesterday I installed Cyanogenmod incorrectly and was freaking out. I was able to somehow get into ODIN mode and and flash a stock OS. But now it's bringing me to the Verizon Setup Wizard... It goes all the way to the activating screen, craps out and ask's me to either use wi-fi or shut off my phone. The phone was obviously already activated months ago. So after rebooting I click on the wi-fi only button and it brings me to E-Mail setup. After I clicked skip it kept bringing me back to E-Mail setup. I tried clicking and holding and nothing worked. Thing is, I think my old data is still on the phone because not only did it automagically connect to my home network, it displayed all of my other saved networks. So idk what to do at this point and I'm hoping someone can help. I don't know if some may have seen my other cry's for help with different issues these past 3 days but thanks to all of you again if you happen to be reading.
i
TheCottonKid said:
So yesterday I installed Cyanogenmod incorrectly and was freaking out. I was able to somehow get into ODIN mode and and flash a stock OS. But now it's bringing me to the Verizon Setup Wizard... It goes all the way to the activating screen, craps out and ask's me to either use wi-fi or shut off my phone. The phone was obviously already activated months ago. So after rebooting I click on the wi-fi only button and it brings me to E-Mail setup. After I clicked skip it kept bringing me back to E-Mail setup. I tried clicking and holding and nothing worked. Thing is, I think my old data is still on the phone because not only did it automagically connect to my home network, it displayed all of my other saved networks. So idk what to do at this point and I'm hoping someone can help. I don't know if some may have seen my other cry's for help with different issues these past 3 days but thanks to all of you again if you happen to be reading.
Click to expand...
Click to collapse
if there s old data and u get problem
so go to recovery mod and wipe all data
then reinstall another compatible rom and run
(i said another rom cause this may have bug, so go to sammobile and search for compatible rom)
:good:

Is there any respite from a fraud company like Huawei?

I have a Nexus 6P which I bought about 7 months ago. It worked fine for about 3 months, but then the WiFi started giving problems. The WiFi icon will all of a sudden go grey and there is nothing you can do to turn it back on. This has happened several times and the only option you have left is a factory reset. But there is no guarantee that the factory reset will fix the problem either. Sometimes the factory reset will restore the WiFi connection, sometimes not. I have had to send the phone back to Huawei twice for RMA and each time the phone was returned to me with the message that the technicians could not reproduce the problem. Of course, each time I received the phone, the WiFi was working and I could setup the phone. I wouldn't be writing this post if that was the end of my problems. The same WiFi issue has occurred again and now Huawei is refusing to do any further repairs on this phone claiming that they have done all necessary testing and there is nothing wrong with the phone. I can say for sure that there is something wrong with the phone because there have been times when even a factory reset will not fix the problem. I am attaching a picture which shows a blank WiFi screen after a factory reset with no networks visible. This screen is the first thing you need to get past after a factory reset and as you can see from the picture, there is no where to go but back as the front arrow is grayed out. I have updated my phone to Android N and still the same problem.
I will be sending a formal letter of complaint to Huawei management and giving them notice that a Breach of Warranty lawsuit is coming unless they resolve my problem. I have contacted Google tech support and they have been unable to help also. Any suggestions?
Go forwards with your lawsuit. I have one question, have you ever rooted before?
TransportedMan said:
Go forwards with your lawsuit. I have one question, have you ever rooted before?
Click to expand...
Click to collapse
No, I have not. Just curious how does that make a difference? Thanks
Wi-Fi
easygo said:
I have a Nexus 6P which I bought about 7 months ago. It worked fine for about 3 months, but then the WiFi started giving problems. The WiFi icon will all of a sudden go grey and there is nothing you can do to turn it back on. This has happened several times and the only option you have left is a factory reset. But there is no guarantee that the factory reset will fix the problem either. Sometimes the factory reset will restore the WiFi connection, sometimes not. I have had to send the phone back to Huawei twice for RMA and each time the phone was returned to me with the message that the technicians could not reproduce the problem. Of course, each time I received the phone, the WiFi was working and I could setup the phone. I wouldn't be writing this post if that was the end of my problems. The same WiFi issue has occurred again and now Huawei is refusing to do any further repairs on this phone claiming that they have done all necessary testing and there is nothing wrong with the phone. I can say for sure that there is something wrong with the phone because there have been times when even a factory reset will not fix the problem. I am attaching a picture which shows a blank WiFi screen after a factory reset with no networks visible. This screen is the first thing you need to get past after a factory reset and as you can see from the picture, there is no where to go but back as the front arrow is grayed out. I have updated my phone to Android N and still the same problem.
I will be sending a formal letter of complaint to Huawei management and giving them notice that a Breach of Warranty lawsuit is coming unless they resolve my problem. I have contacted Google tech support and they have been unable to help also. Any suggestions?
Click to expand...
Click to collapse
Hey, definitely sounds like a hardware problem but just make 100% sure it's not your router just in case. I've seen problems before with certain routers not communicating properly with certain wireless chipsets, in laptops and in mobile devices. You can always test just by getting on a free wifi at some location. If it doesn't even detect any networks and there are multiple certainly sounds like hardware. You could attempt reinstalling the phone from one of Google's official factory images .. there's a tutorial here... http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701 (It's for Nexus 5 but the process is the same, just remember the codename for the Nexus 6P is "angler")
Hope you have some luck
easygo said:
No, I have not. Just curious how does that make a difference? Thanks
Click to expand...
Click to collapse
I was gonna say if you ever rooted, the vendor image partitions, radio, and bootloader get altered so even if you factory reset back to stock firmware you still need to reflash the correct vendor, and radio so WiFi can work. If you've never rooted before it must be a faulty Wi-Fi chip inside the phone.
I mean not to belittle you, but you have restarted the router and or flushed the DNS?

Factory t-mobile S7e losing mobile network connectivity

so this is the second S7e and second SIM that I have been having this issue with. The phone will lose connection to the mobile network and the ONLY way to recover is to reboot phone. Reset Network Settings doesn't do anything. Toggle airplane mode doesn't do anything. Search for Network Operators doesn't do anything. I have a third phone on the way - but has anyone around here heard of or experienced similar? Am I missing something that I should be doing to correct this?
Thanks in advance
I too have this problem. Got a replacement refurbished phone under warranty and the phone has this problem
krishelnino said:
I too have this problem. Got a replacement refurbished phone under warranty and the phone has this problem
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Did you pay the $20? I didnt want to pay the 20 so i sent the device to samsung. Should get it back friday or monday. The issue is definitely phone related. Im using a verizon s7 now and no issues like that arose. I even tried new sim.. My father is having same issue t-mobile s7 edge
Yes i had to pay 20. And it's disappointing I am having this issue with the replacement phone. I am having this problem on the U firmware as well.
Sent from my SM-G935U using Tapatalk
I've suffered the same issue from time-to-time and just do a restart....annoying as hell to be honest
Are you guys always in the same location when this is happening or is it just whenever and wherever? Or is it happening a one certain place where cell signal isn't that great? I had this same issue BUT only in my house so I had to get a network range extender from t-mobile to use at home.
This happens to me all the time. It's so annoying. At work, in the car, at home--it doesn't matter where I am. Have reset firmware multiple times and even rolled back once too. I think it has to do with the latest software because I never had this issue before the Fall/Winter. Hopefully Nougat fixes this!
Quickvic30 said:
Are you guys always in the same location when this is happening or is it just whenever and wherever? Or is it happening a one certain place where cell signal isn't that great? I had this same issue BUT only in my house so I had to get a network range extender from t-mobile to use at home.
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I happens randomly in different places. For me i lose complete signal, and then only get back signal without data. I have to restart when this happens to get back data. Annoying as hell !
frappe33 said:
so this is the second S7e and second SIM that I have been having this issue with. The phone will lose connection to the mobile network and the ONLY way to recover is to reboot phone. Reset Network Settings doesn't do anything. Toggle airplane mode doesn't do anything. Search for Network Operators doesn't do anything. I have a third phone on the way - but has anyone around here heard of or experienced similar? Am I missing something that I should be doing to correct this?
Thanks in advance
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Click to collapse
I am having the same problem, this will be my 3rd phone 4th sim. I wish I knew how to fix it
I would try flashing different radios/modems, its worth a shot. Maybe try flashing the "U" firmware radios.
Nougat will fix it
My wife and I had the same issue on our tmobile s7 edge ... we got the 7.0 beta and now the issue is gone .... I bet it's radio and software related ... 7.0 will be out by the end of the month hope that helps...
I had this issue with my phone, and it was a huge pain. The biggest concern: I didn't know when my phone was off network (voice, data, etc.). The fix, for me, was simple: a new SIM card.
You may have an issue from a rejected permission on an app.
Had the same issue before but I did a hard reset and realised that I changed permissions on an app that wasn't written for 6.1.
ronstopable12 said:
My wife and I had the same issue on our tmobile s7 edge ... we got the 7.0 beta and now the issue is gone .... I bet it's radio and software related ... 7.0 will be out by the end of the month hope that helps...
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I hope so! Been waiting for that before I try anything drastic, even though this issue is a huge pain in the ass. I'm glad others have come out of hiding to express their concerns with it as well. I thought I was the only one for the longest time having this issue.
---------- Post added at 02:20 PM ---------- Previous post was at 02:19 PM ----------
jimfun said:
I had this issue with my phone, and it was a huge pain. The biggest concern: I didn't know when my phone was off network (voice, data, etc.). The fix, for me, was simple: a new SIM card.
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Click to collapse
Many of us have tried new SIM cards, but it's worth a shot if it's still not working consistently after Nougat is released.
---------- Post added at 02:22 PM ---------- Previous post was at 02:20 PM ----------
geeserver said:
You may have an issue from a rejected permission on an app.
Had the same issue before but I did a hard reset and realised that I changed permissions on an app that wasn't written for 6.1.
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My and my friend's phones are both running pure 100% OEM Tmo stock without any apps disabled or touched at all and we have this issue and have done multiple resets. Pretty sure it's an actual hardware defect, or hopefully just a software one with the modem/radio.
krishelnino said:
Yes i had to pay 20. And it's disappointing I am having this issue with the replacement phone. I am having this problem on the U firmware as well.
Sent from my SM-G935U using Tapatalk
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Click to collapse
I was thinking about going that route. But I wasnt sure what condition the phone would be. How was you condition?
I sent mine to samsung and the things they replaced is the Coaxle cable "antenna" replaced 3 of them. I have been using the s7 from verizon on the U firmware so havent seen if it is fixed.
4ringsa6 said:
I was thinking about going that route. But I wasnt sure what condition the phone would be. How was you condition?
I sent mine to samsung and the things they replaced is the Coaxle cable "antenna" replaced 3 of them. I have been using the s7 from verizon on the U firmware so havent seen if it is fixed.
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Click to collapse
I received a refurb. Other than this problem, the phone is alright. I noticed this problem on receiving the phone it was running on T firmware. Then I switched to U firmware and radio but no difference. I called customer support yesterday, they said to go to a retail store to get the phone replaced. My worry is going through this process again and if I receive a bad device again what to do? After all refurb phones are like playing Russian roulette!
Sent from my SM-G935U using Tapatalk
I just had this start happening on mine... I really wish they would release nougat already. It is ridiculous they won't post an Odin flashable version of the release candidate if it does indeed fix the issue.
I also think its a specific tower configuration that is causing the issue that the radio can not understand. (Maybe 3xCA). Its happening in the same areas every time.
I just started having this problem in the past month. All at once I've been getting BT sometimes turning off, mobile networks failing to reconnect after I visit a no/low signal area (such as after a plane trip when the phone was in airplane mode). I've also seen wifi mode fight my attempts to turn it back on sometimes - toggling itself on and off a couple of times per second until I poke at enough settings to stop it. When BT turns itself off I have trouble turning it back on, sometimes it just goes back on, sometimes it refuses after a number of tries and if I wait an hour it goes back on just fine.
The folks at a BB Samsung kiosk said they could reflash it if I wanted to go that route, but that the nougat release would be out soon so it might be better to just wait for that. Has anyone had a Samsung rep re-image their phone to try to solve this?
flarbear said:
I just started having this problem in the past month. All at once I've been getting BT sometimes turning off, mobile networks failing to reconnect after I visit a no/low signal area (such as after a plane trip when the phone was in airplane mode). I've also seen wifi mode fight my attempts to turn it back on sometimes - toggling itself on and off a couple of times per second until I poke at enough settings to stop it. When BT turns itself off I have trouble turning it back on, sometimes it just goes back on, sometimes it refuses after a number of tries and if I wait an hour it goes back on just fine.
The folks at a BB Samsung kiosk said they could reflash it if I wanted to go that route, but that the nougat release would be out soon so it might be better to just wait for that. Has anyone had a Samsung rep re-image their phone to try to solve this?
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Click to collapse
If you were able to fix without a reboot you didn't have the same issue as this.
rocket31337 said:
If you were able to fix without a reboot you didn't have the same issue as this.
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Click to collapse
I guess I wasn't clear about that as I have several problems that are probably related, but behave a little differently.
BT dropping - can usually turn it back on, but sometimes it refuses. Usually don't need to reboot to fix this.
Wifi dropping - often have trouble turning it back on and have seen the widget toggle off and on repeatedly by itself. Sometimes have to reboot to fix that.
Mobile Network data (and voice sometimes) dropping - usually have to reboot. I think I may have recovered that once without a reboot, but the other few times it's happened in the past month since it started I have rebooted and that fixed it in all but one of the reboots - one time I rebooted and still had to fiddle with it a bit after the reboot before it came back. That may have been because I played too much with the network settings before the reboot and so had to undo that damage after the reboot. But, definitely rebooting is a fairly reliable step in fixing this problem.
All 3 started happening around the same time which is why I thought it was a software issue (I remember a small update a little over a month ago, but forget the details of it). It's nice to hear that others also have the mobile network problem, but if that is isolated in those cases then maybe I'm not seeing exactly the same problem. But, it is clear that rebooting is almost always required to get my mobile network data back so that again suggests that at least that part is the same as what this thread is discussing.
In looking at the T-Mobile updates page for the S7 Edge I see that the version I have (G935TUVU4APK1) was updated in early November - which tracks when I started having problems, and it includes a fix for "Domestic data roaming improvements", which definitely sounds like they may have played with the radios.
I am so ready for the Nougat update...

After upgrade, wifi connects, but all apps show off-line

After upgrading my phone from rooted stock 7.0 to 8.1 using this TWRP flashable stock image, it worked 100%. Not a single glitch. I did a dirty install and all of my apps and settings were exactly as before. I was so thrilled that I talked my father into doing the update (I coached him over the phone) in the same exact process I undertook.
Everything seemed to go perfectly, however, on his phone (which was configured exactly as mine was) the wifi doesn't allow data to transfer.
He is able to connect to his router/AP, and it pulls an IP/DNS from the router. I see his phone in the list of devices connected. Signal strength is perfect. There are no device restrictions on the router. Other wireless devices are able to use the web through the router w/o any issue.
Yet, any he opens says it's offline or fails to connect to the web. As soon as he turns off wifi and moves to LTE (T-Mobile), everything works.
It's almost as though there is some global setting that is acting like an out-bound firewall preventing the wifi from accessing the internet.
I've posted a request for help at the thread where I downloaded the rom, but have not had any replies. I'm hoping to reach a broader audience here, just in case this is not rom-specific problem.
This is a bug in the upgrade and is not fixed even in latest update. It is already being discussed in moto forums. Follow up the discussion here,
thank you for posting that link. I just read a number of the most recent pages, and I'm wondering if this really is the same problem. In my case the Wi-Fi is solidly connected. There are no disconnects and the signal strength is 100%. The problem is that the apps do not recognize an internet connection. I haven't found anyone over at the Lenovo forums mention similar symptoms. Only that they are having issues with Wi-Fi dropouts. What is even more confounding, is the fact that my phone had zero issues, and his phone has this bug. All things being equal, you would think that the problem would be on both phones. Or on neither.
Try this, reboot into recovery, wipe cache and reboot. This usually fixes most problems after a major system update. If not, try a full system wipe. You'll have sign in again and set up everything again. That should work as a last resort.
Sent from my Moto G (5) Plus using Tapatalk
Thanks for the recommendation. because the phone is 700 miles away, in my senior Father's hands. I'll have to walk him through that. But after doing the upgrade, we did do the wipe cache as part of the update. I'll try it again, but I am not optimistic. As a last resort, we will do a wipe, but I'm trying to avoid that at all costs because I know how challenging it is for him to set everything back up.and years gone by, I recall being able to fix permissions from the recovery. But now when I look under TWRP I see only fix contents, with a strong warning that it may cause bootlooping. So that's the last thing I want to do.
Well, I'm a bit embarrassed to admit clearing the dalvik cache/cache fixed the problem. We absolutely ran that routine immediately after applying the update, but apparently it did not do what it was supposed to do. I suppose that's because we wiped before booting for the first time? Either way, I had him do a nandroid full backup, and then using the advanced/wipe/(dalvik & cache), it worked. He is thrilled - an me, even more so as it means I don't have to hold his hand to get his phone set up from scratch.

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