Wifi and 4G stuck together - how to fix this? - Samsung Galaxy S7 Edge Questions and Answers

I know i'm not alone since i've seen this issue not only on my phone. When i'm at home my phone is mostly connected to wifi. My router is Linksys AC1900. Sometimes both the wifi and 4G icons appear together. when this happens my battery is draining like hell. a simple restart of the phone or the router is not a solution - i found that in order to make the 4G icon go away i need to first turn off the router so the phone is connected only to the mobile network, than i have to turn off both the data connection and wifi of the phone; than i need to go and clean the cache through the builtin recovery menu. the problem is that sometimes even performing all these things is not enough and the 4G icon won't go away. Download booster and Smart network switch are both turned off, but playing with them do not really affect the issue. also i tried connecting to both 2.4 or 5ghz wifi with no difference. i also tried setting a fixed IP address for my phone, but again this does not affect the issue. any ideas? i'm pretty certain that it's not a hardware issue since i've seen it happening to other people too. it's quite annoying since it's totally destroying the battery life of the phone and it seems that there's no real solution for this behavior.

What model number is your phone? Have you considered reflashing firmware / factory resetting the phone?

The model is 935f. I've tried reflashing with stock several times (the phone is not rooted) but after a while the problem comes back. This is the only issue I've had with this phone but it's quite annoying.

I've got the same issue. The only solution i've seen till now is to reflash with a custom rom.

Same

I have picked up the same type of issue. I did some snooping around and have found that if I have my mobile data on when in the streets and when I get home and I turn on my wifi, that if my wifi signal is very bad and my mobile data is on, then it would show both signals. It's as if the phone tries to get whatever data from both, since the wifi is so bad. I agree that it really chows the battery. The only fix I could get to work is to switch of the data and move closer to the wifi where it's the strongest. I will sit at the router for a minute or two, It then automatically removes the 4g sign and only works on wifi. If I stay where the wifi signal is bad and disable mobile, it stays there even though my data is off.

Did you do a factory reset and restore your phone to its original settings?

Related

Data connection switching bug?

So, I love my new Atrix. I do have one concern going forward with it, however. At home I am on wifi at all times, and at work depending where I am in the building I go back and forth between 2 different wifi networks. I notice when the phone goes back and forth between networks or goes from the cellular data connection to wifi or vice versa it seems to take much longer than any other phone I've had to attain a stable connection. Like for example if I come home from work, pop the phone on and it connects to my home wifi and then I go on the android market and search for something. It will search, but then stop loading suddenly as if it lost the connection. If I give it a good half a minute and close and re-open the market it will work fine again. Has anyone else experienced similar problems?
tekonus said:
So, I love my new Atrix. I do have one concern going forward with it, however. At home I am on wifi at all times, and at work depending where I am in the building I go back and forth between 2 different wifi networks. I notice when the phone goes back and forth between networks or goes from the cellular data connection to wifi or vice versa it seems to take much longer than any other phone I've had to attain a stable connection. Like for example if I come home from work, pop the phone on and it connects to my home wifi and then I go on the android market and search for something. It will search, but then stop loading suddenly as if it lost the connection. If I give it a good half a minute and close and re-open the market it will work fine again. Has anyone else experienced similar problems?
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Yes I have the same problem. Not sure yet if it is a problem with my router at home or a general problem. I am going to test it today at work. Looks like the handshake between 3G and wifi is buggy. I lost even the complete data connection for 3G after I turned my wifi off. I had to reboot my phone.
Yeah, I've never had to do a reboot to get it right again... but it has taken like up to a minute to fix itself at times.
I'm having similar issues as well.
I think that might be a general issue. I came from HTC magic, and it happend especially when i was using Market.
alistairfang said:
I think that might be a general issue. I came from HTC magic, and it happend especially when i was using Market.
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Click to collapse
Not sure about the OP, but for myself and others that have had this issue on the moto forums, it's not isolated to only the market. It has happened to me on the market on the browser, on anything that uses data. It will shut off wifi and go back to cell data and then back to wifi. I have checked my wifi sleep policy and set it to never and still the same issue.
I have noticed this as well. I use WiFi when at the office or at home, but I notice (even after setting wifi to never sleep) that it will turn it off when I am in the office and I will lose a complete data connection. Happens on Google Talk, browser, anything that uses data really. It has been a concern of mine (one of the few) for this phone as I am switching from a BB9700 which seemed to slip in and out of wifi just fine. I think the way this phone handles the wifi (by turning off the 3G data connection) is just wonky
+1. Also seems to take a while if I turn off data for it to come back

[Q] T-Mo G2 Rooted/Stock OTA 2.3.4 Wont stay connected to wifi

I tried searching and I've not found this issue addressed, but I may just be doing it wrong. But, here it goes anyways...
This house has 3 T-Mobile G2s, all with the same OTA. Only mine is rooted. However, none of them will stay connected to wifi. The wifi icon is showing up and it says that I am connected to the access point, but in status it says that mobile network status is disconnected. I can't do anything data related after it times out. If I disable and re-enable wifi it stays connected for a bit before it goes dead again. The handset doesn't go into sleep/screen doesn't turn off. Before I updated I did a Factory Data Reset, then re-entered all my information then let it update. Is there anything I can do, or try?
KittyFae said:
I tried searching and I've not found this issue addressed, but I may just be doing it wrong. But, here it goes anyways...
This house has 3 T-Mobile G2s, all with the same OTA. Only mine is rooted. However, none of them will stay connected to wifi. The wifi icon is showing up and it says that I am connected to the access point, but in status it says that mobile network status is disconnected. I can't do anything data related after it times out. If I disable and re-enable wifi it stays connected for a bit before it goes dead again. The handset doesn't go into sleep/screen doesn't turn off. Before I updated I did a Factory Data Reset, then re-entered all my information then let it update. Is there anything I can do, or try?
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Click to collapse
Being that all 3 phones cannot stay connected I'd be inclined to say look at your router... I'm assuming you've done all the obvious things like reboots, battery pulls, "forgetting" your network and then re adding it? Are other devices in the home able to maintain a wifi connection... your computer, for example? You've tried resetting your router?
If the screen isn't timing out, have you checked your Display settings? What makes you think the screen timeout is related to the wifi problem?
Well in the past on my myTouch 3g... wifi at times would get wonky after the screen timed out/it went to sleep. So was just adding that information here. Yeah, there are at least 8-9 other wifi devices here that can connect to the router just fine and send/receive data. I've tried "forgetting" the access point and then re-adding it, resetting the router, battery pull... and the same thing happens. And the router doesn't have MAC address filtering either. Can't ping google.com or 72.14.204.105 from the phone, but my pc can just fine. If I disable wifi it works as it should. Its just I only have realllly slow EDGE service in the house.
KittyFae said:
Well in the past on my myTouch 3g... wifi at times would get wonky after the screen timed out/it went to sleep. So was just adding that information here. Yeah, there are at least 8-9 other wifi devices here that can connect to the router just fine and send/receive data. I've tried "forgetting" the access point and then re-adding it, resetting the router, battery pull... and the same thing happens. And the router doesn't have MAC address filtering either. Can't ping google.com or 72.14.204.105 from the phone, but my pc can just fine. If I disable wifi it works as it should. Its just I only have realllly slow EDGE service in the house.
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Click to collapse
Hmm... by default wifi should turn off when the screen times out. Unless you've changed the wifi sleep policy. I had mysterious wifi trouble before on a different device (endless "obtaining ip address" loops) and the only thing that worked for me was restoring an older nandroid. Obviously, you're no longer rooted and that's not an option... but it's super unusual that 3 G2 phones are experiencing the same problem. And they're all running the Gingerbread update, so maybe that's the common denominator. I'm sorry I couldn't be more helpful. I'd definitely pay T-Mobile a visit.
I've not messed with the wifi policy, but my last phone would just drop wifi completely and I had to forget/re-enter everything to get it back. If it was the update then I would think the problem would be more widespread. Going to try fiddling with the router some more since that would most likely be where the issue lies. All else fails will just rollback to an earlier nandroid, like you had to do, and seeing if I can't get at least mine consistent. Thanks for your help and letting me bounce ideas off of.

[Q] Wifi to 3G hand-off problem and vice versa

I'm running Cyanogen 7.2 stable on my Droid 2
It seems I cannot successfully transition from wifi to 3g, or from 3G to wifi without hard resetting my phone. If I turn wifi on, then hard reset the phone, it will connect to my chosen access point, I'll get an IP address, and be able to use internet. But when I go into wifi settings and disable the WiFi, it will claim to connect the 3G but I will not be able to connect to any internet site. The notification area will show 3G icon in white, but never turn cyan to indicate a successful data connection. Trying to turn on airline mode does nothing, and the phone will not go into airline mode until I also, turn it off and turn it back off. Then it will reboot into airline mode. A simple soft reset doesn't seem to solve this problem, I have to preform a power off, and then turn it back on.
Conversely if I set it to use 3G and hard reset it will successfully connect to 3g and work fine, but turning on wifi will result in a connection to the access point but no actual data tansfer. Just as before it will show the connection option's icon on the notification bar will show the WiFi icon but it will say white, and never successfully connect. Alternately wifi will connect and the drop the connection repeatedly.
I've looked all over here, and Google for any working solution but I haven't seen any. Mostly just people having trouble connecting to a specific router, which I DO NOT have. Specially the hand-off to 3G and back seems broken and I have to do a hard reset 100% of the time to change from wifi to 3G and back.
Could somebody point me in the right direction for a solution that hopefully won't involve wiping my phone?

[Q] Change in wifi behavior since update

I have noticed this only since the latest update to the Note 3. Before when I left range of my home wifi the phone would go to LTE and upon returning home, automatically reconnect to my home wifi. Now it goes to 4g when I leave, but does not reconnect when I return home. Last night for example, I had been home for a couple of hours and wifi was still turned off and the phone was using 4g. When I manually turned on wifi, it connected immediately. I have played around with settings but can not seem to get it to reconnect automatically as it used to. Below are my advanced wifi settings. Thanks!
Notify: Off
Passpoint: Off
Sort by: Alpha
Keep on during sleep: Always
Always allow scanning: Unchecked
Auto network switch: Checked
I would swap the last 2 checks you have listed. The first check, even though it will scan intermittently, will not affect battery life enough to worry that much about. This also assists in location discovery. The second check will cause your phone to disconnect from your current wifi and force you to manually reconnect if there is ever an unstable connection with your WiFi that the phone detects.
Just my suggestion.
♢NoteIII♢
I did change those but may not have had that combo. The last one, auto network switch, I may have just toggled that off, then back on to try and get it to stick. Intuitively, to me at least, that seems to be exactly what was happening before and what I want now. It was automatically switching from wifi to 4g when I left, and automatically switching back on when I returned to my home network. It seems that turning that off would be the opposite of what I had before, but I will try. My home wifi network seems very stable. Five phones and six computers and none of us ever have trouble with it that we notice.
Thanks! I'll try those options and test it out.
Well I tried that for several days now and it did not work. Tonight, for example, I had been home for 3 hours and then noticed the phone was still using 4g. I switched on the wifi and it immediately connected. I think it is turning off when I am away for wifi for an extended period. I do not remember for sure, but I think before, wifi did not actually turn off. I think it just went out of range and then started using it again when I returned home. I don't really recall the specifics except that before I never had to do anything to get it to start using our home wifi network. lt would just automatically reconnect when I got home. Now unless I remember to turn wifi on manually, I could be home all weekend and still be on 4g.
Any other suggestions anyone might have would be appreciated. Thanks.

[Q] UK note 3 users. wifi problem with virgin media router

I sent my note 3 (sim free n9005) to repair one month ago because a sensor didn't work (another story). Now the sensor problem has been fixed. But there is another issue. The wifi keeps dropping. I mean wifi is completely turned off on my phone, then it tries to turn on, and off again... I have googled a while,it's not the wifi is slow, it's the wifi is completely turned off then it tries to turn it on, and keeps turning on and off. At first it happens occasionally and it can be turned on. Until several days ago, wifi could not be turned on at all. If I go into setting - connection - wifi, I will see it says 'turning on' but nothing happens. Reboot helps sometimes but the issue soon reappear. I did factory reset but no use. I would think it's the phone's problem. But When I go outside and test in public wifi (university wifi, MacDonald etc), it got no problem at all. So I began to think maybe there is something with the router. So I turned off my router, the wifi is turned on immediately and I can see all the wifi connections from my neighbours.
My router is virgin media netgear vmdg485 (100M fiber optical). I googled it, it seems specially made for Virgin media. It's a modem/router all-in-one device. Just wondering has anyone else got similar experience? B.T.W all other devices in my home connect to the wifi no problem at all. I think they may have upgraded my android software on the repair. I never had this problem before the repair. But android is the latest version (checked in settings). So I don't know what option I have on software side. Probably I need to try a new router?
And also I have tried everything I found on Internet (turn off switch network etc in advanced setting in wifi. turn off power saving for wifi, disable wifi direct/share, etc).
thotwielder said:
I sent my note 3 (sim free n9005) to repair one month ago because a sensor didn't work (another story). Now the sensor problem has been fixed. But there is another issue. The wifi keeps dropping. I mean wifi is completely turned off on my phone, then it tries to turn on, and off again... I have googled a while,it's not the wifi is slow, it's the wifi is completely turned off then it tries to turn it on, and keeps turning on and off. At first it happens occasionally and it can be turned on. Until several days ago, wifi could not be turned on at all. If I go into setting - connection - wifi, I will see it says 'turning on' but nothing happens. Reboot helps sometimes but the issue soon reappear. I did factory reset but no use. I would think it's the phone's problem. But When I go outside and test in public wifi (university wifi, MacDonald etc), it got no problem at all. So I began to think maybe there is something with the router. So I turned off my router, the wifi is turned on immediately and I can see all the wifi connections from my neighbours.
My router is virgin media netgear vmdg485 (100M fiber optical). I googled it, it seems specially made for Virgin media. It's a modem/router all-in-one device. Just wondering has anyone else got similar experience? B.T.W all other devices in my home connect to the wifi no problem at all. I think they may have upgraded my android software on the repair. I never had this problem before the repair. But android is the latest version (checked in settings). So I don't know what option I have on software side. Probably I need to try a new router?
And also I have tried everything I found on Internet (turn off switch network etc in advanced setting in wifi. turn off power saving for wifi, disable wifi direct/share, etc).
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Click to collapse
Hi,
I had a similar problem with my note and was advised to go into the wifi settings and deactivate "Scanning always available" and "Auto network switch".
I had this problem with a Virgin media router and where android was under the impression the connection was unstable it was deactivating the wifi to go back to the cellular.
This may be completely wrong but it solved it for me.
Hope this helps!
I had this issue and the only thing that solved it was a factory reset.
I had a similar problem with my Note 3 (SM-N9005) and Virgin Superhub 1
I hadn't previously noticed problems with wi fi at home when using different phones in the same location.
After much reading on support forum I concluded that many Superhub users believe the device is not very effective when operating as both a cable modem + wi fi router.
I opted for an expensive solution of buying a new wi fi router.
My Superhub now operates just as a cable modem and is connected via ethernet cable to the adjacent Asus RT-AC66U which does have the advantage of 802.11 ac.
Speed test result from Note 3 via wi fi setup described above.
http://www.speedtest.net/my-result/a/822449802
Sent from my SM-N9005 using XDA Free mobile app
Thanks paul, mine is super hub as well. I want to get a router to test, but worring if it doesn't solve the issue.
wow, that router is a lot of money, really hope it's not the router issue.

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