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[Q] 4G mobile network still connected when Wifi is ON?!

So my phone just started showing this behavior like a day or two ago. It's doing it right now. Both my Wifi and 4G icons appear in the notification bar. The 4G icon isn't showing activity (the download and upload arrows are dimmed), BUT if I go to my "Phone Info" app, and go to Phone Information it shows:
GSM service: In service
GPRS service: Connected
Network Type: HSDPA
Before whenever I was on Wifi only the Wifi icon would show up, and Phone Info would show GPRS Service as : Disconnected, i.e. normal behavior. Now it appears there is a conflict somewhere and the 4G network is showing as connected even when wifi is on.
Now, I did make some changes recently:
1) Temp-rooted and pm disabled a bunch of bloatware - this was like 4 or 5 days ago and I didn't have the problem at all so I'm not sure if it's related.
2) I unchecked Wireless Settings > Mobile Networks > "Enable always on mobile data" - Thought it might save battery when in sleep mode.
I think the problem started after #2. I've since checked that option back on, restarted, airplane mode, battery pull etc., but it's still exhibiting the same behavior. I've never seen this happen on any of my past Android devices (a lot). If I go to the Quick Settings it shoes Mobile Network is OFF but it IS checked. It's really confusing. When you turn Wifi on, Mobile network should disconnect, but according to phone Info, mine is on and I've been getting "network issue, try again" in the Market, and "Network Communication issues" in the Speedtest app so clearly something is being affected.
This has been my ONLY problem with my Sensation thus far, and the fact that it JUST started doing this makes me wonder what I could have done to affect it.
Thoughts?
EDIT: Every once in awhile the 4G icon WILL disappear leaving only Wifi on, and Phone info shows GPRS service: Disconnected, but eventually the 4G/2G icon comes back and Phone info shows GPRS service: Connected, so it keeps trying/turning itself on even though my Wifi is connected. WTF!

If you're on a t mo device it's because of the my device app. Open and close it or end the process in system panel and it should fix the problem.

I believe this is somewhat normal...
I have voice only plan and disabled data through the *#*#INFO#*#* menus. The only way I can get data is through Wifi, which I always have enabled, regardless when I go to About Phone -> Network, I see mobile network type HSDPA.
It seems like voice is going through the 3G/4G but not any data. Not sure why you do get the 4G popping up, I sure don't.

Sdobron said:
If you're on a t mo device it's because of the my device app. Open and close it or end the process in system panel and it should fix the problem.
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Click to collapse
Thanks! I tracked down the second package name for "My Account" (one is for My Account, one is for My device), disabled and rebooted. So far so good; Wifi is connected, no 4G icon, and Phone info shows GPRS service: Disconnected as it should. I had already disabled one package but not the other. I can live w/o the My account feature for a bit and I'll keep an eye out to see if the problem returns.

bigmase521 said:
Thanks! I tracked down the second package name for "My Account" (one is for My Account, one is for My device), disabled and rebooted. So far so good; Wifi is connected, no 4G icon, and Phone info shows GPRS service: Disconnected as it should. I had already disabled one package but not the other. I can live w/o the My account feature for a bit and I'll keep an eye out to see if the problem returns.
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Click to collapse
You phone will always connect to data whn using Tmobile apps such as my account app. Its because they need network data, not web data, to get their info like your usage, and billing. If you manually shut of data and turn wifi on and try to open the my account app, it will give you error.
Just because you turn Wifi on, it doesnt make the data shut off. It just connects to WIFI because its a stronger signal. It will still access the 4G data for netork required information. You can manually shut off mobile data and then turn on wifi if you want.

^This is true, I'm manually switching 4G off when connected to WiFi.

dubie76 said:
You phone will always connect to data whn using Tmobile apps such as my account app. Its because they need network data, not web data, to get their info like your usage, and billing. If you manually shut of data and turn wifi on and try to open the my account app, it will give you error.
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Click to collapse
I realize this, however I was never trying to use the T-mobile apps.
dubie76 said:
Just because you turn Wifi on, it doesnt make the data shut off. It just connects to WIFI because its a stronger signal. It will still access the 4G data for netork required information. You can manually shut off mobile data and then turn on wifi if you want.
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Of course it does. What would be the point in having BOTH Wifi and 4g/3g/EDGE data on at the same time, all the time? That would be a HUGE drain on your battery if it were constantly using both radios and connected to/searching for both networks. When you turn Wifi on, the mobile data radio gets turned off. When you de-activate Wifi, mobile data turns back on. This is why you get much better battery life on Wifi because the 4g/3g radio gets turned off. Plus, both can't be connected at the same time or else there would be routing problems i.e., it would get confused as to which connection to use.
This is exactly what happened to my phone in that that both WERE on at the same time and it was causing no traffic to get in/out and I couldn't figure out why. Disabling the two t-mobile My Account packages solved it so it seems like
one was trying to connect in the background and couldn't but then froze the radio state. I'm not gonna re-enable the app to confirm but IIRC when you're on Wifi and fire up the My Account app, it either prompts you to turn off wifi, or it just disables wifi temporarily and fires up the mobile radio in the background, and re-enables when you're done.

Sdobron said:
If you're on a t mo device it's because of the my device app. Open and close it or end the process in system panel and it should fix the problem.
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Click to collapse
Yep. If you keep the T-Mobile my account app running it will do that cause It needs the 4G/Data connection.

xamadeix said:
Yep. If you keep the T-Mobile my account app running it will do that cause It needs the 4G/Data connection.
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Right, but what I'm saying is that I wasn't running the app. It does run as a service though so I'm wondering if it was trying to connect on it's own in the background, though I'm not sure why. I haven't seen this behavior on any other devices including my Sensation before I disabled one of the My Account apps, but I'm almost positive at this point it was the culprit. Could be because I had only disabled one of them and not both. After I disabled the second, the problem went away.

Do you have WiFi sleep disabled?
If not, phone may revert to regular data until you start communicating and wake up your WiFi.
Just a thought.
Sent from my HTC Sensation 4G using Tapatalk

PaulGiz said:
Do you have WiFi sleep disabled?
If not, phone may revert to regular data until you start communicating and wake up your WiFi.
Just a thought.
Sent from my HTC Sensation 4G using Tapatalk
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Nope, sleep policy is set to "Never" and wifi sticks fine. Still happened even with screen on so wifi was def. awake. I fixed it by disabling the T-Mo My Account apps so I'm cool but maybe it can help someone else if they have the same problem. It's really weird, never seen it happen before. I wish I took a video of it before I disabled the apps. Thanks guys.

bigmase521 said:
Right, but what I'm saying is that I wasn't running the app. It does run as a service though so I'm wondering if it was trying to connect on it's own in the background, though I'm not sure why. I haven't seen this behavior on any other devices including my Sensation before I disabled one of the My Account apps, but I'm almost positive at this point it was the culprit. Could be because I had only disabled one of them and not both. After I disabled the second, the problem went away.
Click to expand...
Click to collapse
It's poor coding in the app. Nothing you're doing wrong.

wifi fallback issue on SGH-i727????

Hi,
Just wonder if anybody is experiencing the same wifi fallback issue on the SGH-i727?
Basically, the phone doesn't automatically fall back to the previously added wifi network from LTE/4G when the screen is off. To get around that, I'll need to hit the power button once every time I enter the wifi range. When the screen is turned on by hitting the power button, I will see the 4G/LTE being replaced by the wifi icon very quickly. After that, it will then stay connected to the wifi network regardless whether the screen is on or off.
I was able to confirm this issue by monitoring the app traffic before and after I turned on the screen.
Without turning on the screen in the wifi range, the phone will stay on the 4g/LTE network forever even though the previously added wifi network is available.
I have already tried out different routers and it's still the same. SSID broadcast is on. I am thinking if there's a bug with the phone. Note that on my phone, my "Wi-Fi sleep policy" under the advanced menu of the "Wi-Fi settings" is always set to "never". Also, it's a stock ROM, nothing is modified at all.
This issue has never happened on other phones. What you think? Am I missing anything here?

After playing with it more, I noticed that the phone will never do the wifi handshake when the screen is off.
I tried turning off and on the wifi in the Wi-Fi settings. If I turn off the screen quickly before the phone gets connected to the wifi network again, it *will* remain unconnected until the screen is turned on again. =(

Did you go into the advanced wifi settings and change the wifi sleep policy?
Sent from my SAMSUNG-SGH-I727 using XDA App

No, I didn't. I've never touched that setting. The "Wi-Fi sleep policy" is always set to "never".
My phone can still be connected to wifi when the screen is off, so it doesn't seem related to the "Wi-Fi sleep policy". The problem is only that it won't do any wifi connection handshake during screen-off.
Am I the only one having this issue? I guess that's more of a software issue rather than a hardware issue?

Have you tried the AT&T wifi app? It automatically turns off and on wifi as needed

No, that doesn't help.

Yes, I do realize I'm bringing back a thread from the dead, but...
I just got a Samsung Stratosphere (SCH-i405 -- a CDMA-1X/EVDO/LTE Galaxy S phone) and it does EXACTLY the same thing. It's ironic, on the Stratosphere they added a bit of fun that CONSTANTLY lets you know there's networks (which I had to disable), but it doesn't connect to the wifi networks I do have in there until I turn on the screen I guess that's just how it is; at least it doesn't kill the wifi once it IS connected.
If anyone knows a programmatic way to bypass this, I'd be interested, and I could write up a wifi app to implement the solution. I'm guesisng it's a behavior of the drivers though and would take some custom ROM or something to fix.

You could always try to use tasker for automatically connecting to the wifi using radio antenna or maybe can't remember if possible by identifying certain wifi spot.

Atrix 2 known wifi problems?

I have an Atrix 2. It has been replaced twice by AT&T due to this problem. I have factory reset each phone and tried every battery mode, data saver, sleep policy and wifi channel.
The problem:
The wifi turns off by itself! not sleep, off! As in the checked box is unchecked. The phone does it during use and when not being used. The timing between instances is random. The wifi sometimes stays on for hours. Other times it wont last five minutes. I have 4 other wifi devices connected by wifi to my secured router.
Note: I travel across the country for work and the problem occurs at airports, hotels, mcdonalds, ect.
I have called Motorola and their only option is to send it to the with no replacement. I could use some help. I have been searching online and others with this problem dont persist, they simply state that unsecuring their router fixed the problem. That is not an option for me as the routers are not mine.
Any input will be greatly appreciated.

Hi, I recently noticed this problem started after I installed the ATT Smart Wi-FI app. Mine will connect then turn off, wait a second turn back on then I get the WIFI networks avail message and I check it and it's not connecting to the network til I tell it too then it will stay connected all day.

I"ve had my atrix 2 for about a little over a month. It's doing the same thing. Wifi will randomly shut off. I have to go into the settings to turn it back on. It will work fine for a little while then just shuts off again. Does anyone know if this seems to be hardware or software related. I've tried different apps and WiFi sleep settings to no avail. I really like the atrix but this is kind of annoying.

I have the same issue also, except I have top reboot my phone for wifi to work again.
Sent from my MB865 using XDA App

i have the same problem, it's not my wifi connection, but the actual wifi setting turns off whenever i turn off my screen and yes, i've set the wifi sleep policy to "never", so that's not the problem. i've also tried "never when plugged in" and "when screen turns off" and i still get the same problem. i was thinking about going to at&t and asking them about it but decided to come here first.
(a white iphone 4 is looking better and better ) can anyone help?

I had this problem but after I disabled the power saver option under battery and data (set it back to performance) it went away and Wi-Fi works perfect.

Tried different battery saver settings as well, nothing changed.
Sent from my MB865 using XDA App

WiFi cycling off and back on every so often, and sometimes disabling itself

Sometimes my WiFi goes away, LTE kicks in for a second, and then WiFi comes right back. I don't know for certain, but it may only happen when the phone has been unused for a while, right after I first pick it up to do something. But I have the WiFi power saving option turned off, so that WiFi should stay on all the time. And I seem to recall it happening just at random sometimes, too, in the middle of browsing websites or social media apps. It'll say "no connection" and I'll look up and see LTE kick in, then WiFi come right back, then I'm all good. It's very annoying.
On top of the quick WiFi cycling issue, sometimes WiFi will just completely stop working. When I go into settings, it says it's disabled and I can't turn it back on. Going in and out of airplane mode fixes it. This only happens about once a week or so. The other issue is by far more annoying.
Anyone else experiencing either of these? I'm on Verizon with a black 128 GB stock, unrooted, if it makes a difference.
Thanks!

I personally haven't seen this on my VZW Pixel although I use it with T-Mobile service. These are as suggestions only, and it may or may not help, but you could try using any order below.
1) The setting to keep WiFi during sleep is on, right?
2) Have you tried to use your phone without sim card in it and see if WiFi is still acting strange?
3) I would also suggest to go to Settings>Google>Networking and see if you have WiFi assistant on or off. There is a setting under advanced as well.
4) Does it happen on all WiFi networks or when using on particular one? You could forget that network and then join again.
5) Alternatively you could "Network settings reset" under Settings>More>Network Settings Reset - after the reset, you may need to rejoin all the networks, pair Bluetooth devices and so on.

Android Wifi Calling issue

Hi,
I have noticed a strange behaviour using Wifi Calling. When I am away from home, and returning, it takes the phone about 15-20 mins for the wifi calling icon to show up and to be available. If I use airplane mode on/off it works instantly. I have seen this a few times on IOS as well, but seems more frequent on Android. So far tested on Samsung S22U and Sony Xperia 1 IV.
Also, today, while I was in a call, using VoWifi, the call dropped and when I looked immediately on the phone, vowifi icon was gone and it came back in a matter of 10 seconds.
Has anyone faced these issues and was able to narrow down the cause of it? My Wifi network does not have a firewall in place nor am I doing any sort of filtering. Changing between DNS servers makes no difference.

Turn off automatic WiFi network login on your phone and check again if it helped.

Hi, I do not have such option available. You mean wifi auto connect when in range?

Yes, because the phone can switch when the signal from the first router is weakening. (1)
Also, by setting up a manual connection, you can be sure that you are connecting to the router you want to connect to, not just any one. (2)

ze7zez said:
Yes, because the phone can switch when the signal from the first router is weakening. (1)
Also, by setting up a manual connection, you can be sure that you are connecting to the router you want to connect to, not just any one. (2)
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So you're saying turn those 2 settings off? I just recently ran into this issue with my Wi-Fi conking out intermittently and I'm experiencing 20% battery loss over night. I'm thinking its bad hardware. I just turned off these settings. I'll report back if it helps.