Develop Bugs

Mobile data stays on while WiFi is on

I just unlocked my T-Mo GS2 and it's working great so far. Only thing I miss from my HTC Desire was that Mobile Data used to automatically switch off whenever I'm connected to wifi networks.
This doesn't seem to be the case here. Data indicator stays on even though I'm connected to my home wifi.
Is there a setting option that I'm missing somewhere?

I notice this as well. Its sporadic though. Data does sometimes drop off but not always.
ToastMan12 said:
I just unlocked my T-Mo GS2 and it's working great so far. Only thing I miss from my HTC Desire was that Mobile Data used to automatically switch off whenever I'm connected to wifi networks.
This doesn't seem to be the case here. Data indicator stays on even though I'm connected to my home wifi.
Is there a setting option that I'm missing somewhere?
Click to expand...
Click to collapse
Sent from my SGH-T989 using XDA App

Yes, yes! I thought it was my router or something. Sometimes the device will try and use mobile data even if I have a very weak cell signal and a very strong wifi signal. It usually works right after connecting to wifi, but after being connect for a long period of time, it seems to try and switch back to mobile data despite my wifi sleep policy being set to 'Never'.

ToastMan12 said:
I just unlocked my T-Mo GS2 and it's working great so far. Only thing I miss from my HTC Desire was that Mobile Data used to automatically switch off whenever I'm connected to wifi networks.
This doesn't seem to be the case here. Data indicator stays on even though I'm connected to my home wifi.
Is there a setting option that I'm missing somewhere?
Click to expand...
Click to collapse
Mine did this too all the time until I got a new Sim. I have only had it happen once since then.
Sent from my SGH-T989 using xda premium

I'm having the same issue. New sim.
Sent from my SGH-T989 using xda premium

This issue has already been posted somewhere.... I think in the battery thread. The fix was to get the Llama app and set up a profile to switch wifi off when no wifi available, and to switch 4G off when connected via wifi.

Wifi Fixer app in Market seems to be working nicely so far too.
Sent from my SGH-T989 using XDA Premium App

Aaron636r said:
I'm having the same issue. New sim.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
The only other thing I did besides a new Sim was a factory reset. Its only happened once since that and the new Sim. Also I turn wifi off and only on when I need it. Don't know if some are leaving it constantly on.
Sent from my SGH-T989 using xda premium

have the same problem , hopefully this is fixed

It's staring me in the face as I write this. Wifi connected, 4G on.
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Sent from my SGH-T989 using XDA App

Yea had that problem aswell. I just turned off 4g when I'm on wifi.
Sent from my SGH-T989 using XDA App

The system is going to turn on your data when it needs to check info or upload/download data that verifies your device or is of a sensitive nature to the system, such as purchase authorizations in the market. When our data connection is popping up while connected to wifi and you're not doing anything (like making a market purchase), there could be undesirable transmission of data going on. Not to say it's definitely malicious in nature, however like I said I do see data transmissions taking place for no apparent reason. Could be some app or widget I use has an auto update that does something to activate it, but as long as the app keeps transmission and activity levels minimal, it's unlikely to pop up on a security app that alerts based on excessive data usage.
Sent from my SGH-T989 using xda premium

OK, good to know that I'm not alone in this.
It seems that data isn't being used much while connected to wifi. About of 1mb of traffic through all the time that I was connected to wifi. That was a few hours of usage last evening, and then the whole night on idle.
The question is how is this affecting battery life when it just sits there doing nothing.
Sent from my SGH-T989 using xda premium

Mine has been doing that too, I figured out it was an app making it happen. For me it was the app "beat the traffic" because as soon as I uninstalled it, mobile data went away while on wifi.
Sent from my SGH-T989 using Tapatalk

brian6685 said:
Mine has been doing that too, I figured out it was an app making it happen. For me it was the app "beat the traffic" because as soon as I uninstalled it, mobile data went away while on wifi.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
Same problem, same cause - except mine was a background thread for "Media Hub", which of course is one of those DRM crazy apps that will not work over WiFi. Ran it to just check it out, but nothing worth seeing there so that won't happen again.
When both were running, it seemed each app choose its own path for connectivity, probably related to how the app was coded. For example streaming from web via Flash used WiFi, but most other apps used 4G.
Edit: Add T-Mobile's "My Account" application as one that causes this to happen.

This seems like a side effect of a tremendous amount of bloatware on this phone. Some of those magenta apps only work on the mobile network. Sometimes you will notice that wifi only will show and then all of a sudden you see both the 4g and wifi on at the same time. Hopefully root will take care of the problem.
If it was programmed correctly it would not allow those background apps to update on the 4g network but it seems the coding leaves it open to start up even when on wifi. This is an assumption but from my tests, it seems that's what's causing it.

same issue here

if you guys believe this is a bug, please report it directly to samsung using the form in stickied in the forum
thanks

I reported as a bug prior to discovering its not really a bug. If you go into task manager and open the ram tab and kill all it goes away. I havent had this issue for 3 days now. Its gotta be one of the tmobile apps causing it.
AllGamer said:
if you guys believe this is a bug, please report it directly to samsung using the form in stickied in the forum
thanks
Click to expand...
Click to collapse
Sent from my SGH-T989 using XDA App

mikeyinid said:
I reported as a bug prior to discovering its not really a bug. If you go into task manager and open the ram tab and kill all it goes away. I havent had this issue for 3 days now. Its gotta be one of the tmobile apps causing it.
Sent from my SGH-T989 using XDA App
Click to expand...
Click to collapse
What are you killing when you go to the ram tab?

Anyone having MMS issues?

Noticed this last night, havent been able to send an MMS since about 9pm lastnight. Local issue?

Still having the issue, is there some data I can clear or something to reset?

Custom rom?
Sent from my LG-LS970 using xda premium

Nope, bone stock. Running ZVB.

This has happened to me before with this phone and Sprint. First question: are you using the Stock Messaging app? If so, try rebooting the device. I've noticed when I was on ZV9 or ZV8 (can't remember which one) when I would drive through an area with no signal, the radio just refuses to pick data back up. Turning Airplane Mode on and off or a reboot usually fixes the issue. If you're not using the stock messaging app, you might have to wait for an update to that app.
Sorry, that's really all I got.

Airplane mode on/off, reboot, nothing is working.

Settings are correct
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Sent from my Sprint LG Optimus G

Not sure if your having the same exact issue i am. But i can't send test messages shorter than 4 words or so. This has happened to me since i got the jelly bean update. I have reset the phone, check the settings like u, root and reinstall jb, done ## something##, brought my phone to sprint...... Ihave not found the answer yet either. Its really annoying when i want to reply something short and to the point. My text messages are littered with fails. If you figure something out please let me know. And to top it off sprint says i need to spend 50 bucks on a referbished phone, to fix my issue.Wtf

I was able to send a text of more than 4 words, seems to be MMS outgoing only. I received a pic earlier this week.

I meant I can not send outgoing messages shorter than 4 words or so.
Mindspin_311 said:
I was able to send a text of more than 4 words, seems to be MMS outgoing only. I received a pic earlier this week.
Click to expand...
Click to collapse

peteyo said:
I meant I can not send outgoing messages shorter than 4 words or so.
Click to expand...
Click to collapse
Oh, I can do that too haha
No issues sending regular texts.

Sms apps from the play store work just fine.
I'm pissed now. Factory reset?
Sent from my Sprint LG Optimus G

Yeah, if all else fails, I'd go with that.

I think even Go Sms stopped working
Sent from my Sprint LG Optimus G

Try updating profile/prl...
Sent from my LG-LS970 using xda app-developers app

No one else has this issue?

Factory reset didnt work either

Have you tried calling Sprint to see if there's an outage in your area?

I doubt its a 2wk outage. Also, my fiancee's GS3 can send pictures no problem. I can also send pictures via GOSMS, but that is just a crutch and I shouldnt have to do that.

Mindspin_311 said:
I doubt its a 2wk outage. Also, my fiancee's GS3 can send pictures no problem. I can also send pictures via GOSMS, but that is just a crutch and I shouldnt have to do that.
Click to expand...
Click to collapse
Well you can still try calling. And see if there's something they can do on their end. I had a similar problem like this before and they said there was like a data blockage to my phone or some bs. And they pretty much had to reactivate my phone.

Hot spot connection issue

Hi guys
Having trouble using hot spot. Running skynote 8.2 worked before now the computer connects but cant load the page.when I troubleshoot it it says its a dns problem. I reflashed and even flashed clean rom and jedi rom on but still no luck.anyone got any free time to help please.desperately need this feature for work.
Sent from my SAMSUNG-SGH-I317 using xda premium

anyone can help? I tried to search for the solution, wiped my phone, flashed it with the same rom, flashed it with another rom, used wired, wireless and bluetooth tether.
it all ends the same. the connection drops data after a while and i can't connect to any internet.
iniquity0411 said:
Hi guys
Having trouble using hot spot. Running skynote 8.2 worked before now the computer connects but cant load the page.when I troubleshoot it it says its a dns problem. I reflashed and even flashed clean rom and jedi rom on but still no luck.anyone got any free time to help please.desperately need this feature for work.
Sent from my SAMSUNG-SGH-I317 using xda premium
Click to expand...
Click to collapse

iniquity0411 said:
anyone can help? I tried to search for the solution, wiped my phone, flashed it with the same rom, flashed it with another rom, used wired, wireless and bluetooth tether.
it all ends the same. the connection drops data after a while and i can't connect to any internet.
Click to expand...
Click to collapse
Mine does that too, not just my phone but my Wireless hotspot too, (a AT&T Unite) I can keep the connection up by doing a "ping www.google.com -t" in the command line.
Yes, this will kill your battery, consider using bluetooth or USB tether.
Furthermore AT&Ts DNS servers suck use these
8.8.8.8
8.8.4.4
208.67.222.222
208.67.220.220
Just put them in to your DNS settings in Windows.
This isn't an issue with your devices, its a AT&T issue from the looks of it. (I called AT&T and they tell me that the local tower is having issues so unless I continuously ping google I can't tether or use my hotspot for more than 20 minutes without getting DNS errors, Does it with any ROM I try, even my PlayStation Vita does it)

Sorry but my note 2 is bell variant and i'm on bell network in Canada. The only reason I'm using this forum is because AT&T has the same model unlike the other verizon and such.
So any other idea???
i also tried to set the hotspot auto turn off to always on and it seems to help a little. however every now and then i still get disconnection.
Neoistheone2000 said:
Mine does that too, not just my phone but my Wireless hotspot too, (a AT&T Unite) I can keep the connection up by doing a "ping www.google.com -t" in the command line.
Yes, this will kill your battery, consider using bluetooth or USB tether.
Furthermore AT&Ts DNS servers suck use these
8.8.8.8
8.8.4.4
208.67.222.222
208.67.220.220
Just put them in to your DNS settings in Windows.
This isn't an issue with your devices, its a AT&T issue from the looks of it. (I called AT&T and they tell me that the local tower is having issues so unless I continuously ping google I can't tether or use my hotspot for more than 20 minutes without getting DNS errors, Does it with any ROM I try, even my PlayStation Vita does it)
Click to expand...
Click to collapse

iniquity0411 said:
Sorry but my note 2 is bell variant and i'm on bell network in Canada. The only reason I'm using this forum is because AT&T has the same model unlike the other verizon and such.
So any other idea???
i also tried to set the hotspot auto turn off to always on and it seems to help a little. however every now and then i still get disconnection.
Click to expand...
Click to collapse
Did anything change when you continuously pinged Google?

I keep refreshing the page, enter new common websites such as MSN or yahoo and they all show nothing except DNS failed look up. I changed the bell apn to some tether apn bell offered but that didn't work. So now I reset the apn to have it look up the settings itself. Still having the issue..
I never had this issue until recengly like last two weeks. Iunno what could be the Cuz and I can't figure out is it my phone, rom, or laptop...
I seriously will pay someone if they can't help me fix this!
Thanks in advance to this wonderful community.
Sent from my SAMSUNG-SGH-I317 using xda premium

heres what i get when i "ping" google using your command in the 'command prompt'
i still have internet but i guess when i go stream some videos it goes into DNS look up error...
i'll upload the screen pics.
when i ping it just keeps going... iunno if that's suppose to happen.
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Disable your app and use ES File Explorer to hotspot. This can help to see if it is wifi app specific issue, or a common (phone setting, DNS...) problem.
Mine works this way on Stock and no root.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

Cant send or receive mms while on wifi after updating to 5.1.1 with odin files

Title says it all. My carrier is Cricket if that helps. Thanks

elloco27 said:
Title says it all. My carrier is Cricket if that helps. Thanks
Click to expand...
Click to collapse
I used to have this issue on my old phone when using Juice Defender. The app used to disconnect data when connected to wifi, but MMS uses data whether connected to Wifi or not. I'm not saying that you're using Juice Defender though, but my point is that you should check that your data is enabled through settings when connected to Wifi and trying to send MMS.
Let me know if you don't know how to wnable/disable data. If you're using a battery saver app, make sure that it isn't toggling data too.
Sent from my SAMSUNG-SM-N910A using Tapatalk

spexwood said:
I used to have this issue on my old phone when using Juice Defender. The app used to disconnect data when connected to wifi, but MMS uses data whether connected to Wifi or not. I'm not saying that you're using Juice Defender though, but my point is that you should check that your data is enabled through settings when connected to Wifi and trying to send MMS.
Let me know if you don't know how to wnable/disable data. If you're using a battery saver app, make sure that it isn't toggling data too.
Sent from my SAMSUNG-SM-N910A using Tapatalk
Click to expand...
Click to collapse
I don't have any battery saving app. Please show me how to enable data with the wifi on

elloco27 said:
I don't have any battery saving app. Please show me how to enable data with the wifi on
Click to expand...
Click to collapse
Nothing should off your data then, but it's always possible that it could've turned off somehow, so just double check using my screenshots.
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Sent from my SAMSUNG-SM-N910A using Tapatalk

If data is on, then try turning Airplane Mode on then off. Then try rebooting if you haven't already (many people rarely reboot their phones nowaday. Not really a need to anymore).
If those don't work, then I'm at a loss. Sorry.
Sent from my SAMSUNG-SM-N910A using Tapatalk

spexwood said:
I used to have this issue on my old phone when using Juice Defender. The app used to disconnect data when connected to wifi, but MMS uses data whether connected to Wifi or not. I'm not saying that you're using Juice Defender though, but my point is that you should check that your data is enabled through settings when connected to Wifi and trying to send MMS.
Let me know if you don't know how to wnable/disable data. If you're using a battery saver app, make sure that it isn't toggling data too.
Sent from my SAMSUNG-SM-N910A using Tapatalk
Click to expand...
Click to collapse
spexwood said:
If data is on, then try turning Airplane Mode on then off. Then try rebooting if you haven't already (many people rarely reboot their phones nowaday. Not really a need to anymore).
If those don't work, then I'm at a loss. Sorry.
Sent from my SAMSUNG-SM-N910A using Tapatalk
Click to expand...
Click to collapse
Didn't work but thanks for the help I'll try factory resetting my phone.

elloco27 said:
Didn't work but thanks for the help I'll try factory resetting my phone.
Click to expand...
Click to collapse
Darn. I was really hoping that that was the problem since it's an easy fix.
Factory reset should definitely help. It's just a PITA. :/
Good luck!
Sent from my SAMSUNG-SM-N910A using Tapatalk

my Msm/mms stop sending text on both wifi and/or data after i use Package disabler app. I enabled all apps now and it's still not working right.
It works after a reboot but stop working 5 mins later. Grrr
LLP 5.1.1

[Q] Wifi turning itself on

Hey, Everyone
I'm hoping someone might know why the wifi on my S8+ turns itself on and connects itself when I have all the wifi settings that I know of turned off?
I'm not rooted, the phone is about a month old and again, I have settings for wifi turned off, the smart switch is turned off and yet it still turns itself on and connects to the wifi that is available.
This device is a G955U GS8+ T-Mobile U.S. 64GB Date: 04/29/2017
Always, thanks in advance for any help and your time.

kaiserXDA said:
Hey, Everyone
I'm hoping someone might know why the wifi on my S8+ turns itself on and connects itself when I have all the wifi settings that I know of turned off?
I'm not rooted, the phone is about a month old and again, I have settings for wifi turned off, the smart switch is turned off and yet it still turns itself on and connects to the wifi that is available.
This device is a G955U GS8+ T-Mobile U.S. 64GB Date: 04/29/2017
Always, thanks in advance for any help and your time.
Click to expand...
Click to collapse
Mine does the same thing when it's close to the router. I've gone into wifi advanced and turned everything off that could trigger it also turned smart switch off. When I have the phone away from the router it doesn't happen, just wondering if there's a proximity setting somewhere I haven't found yet.

ggrant3876 said:
Mine does the same thing when it's close to the router. I've gone into wifi advanced and turned everything off that could trigger it also turned smart switch off. When I have the phone away from the router it doesn't happen, just wondering if there's a proximity setting somewhere I haven't found yet.
Click to expand...
Click to collapse
That is something to consider, since we can't find anything in the standard settings. I'm staying in a motel and the router is relatively close in proximity, 50-60 feet, in a building next door. I've never known or heard of wifi being tied into a proximity sensor. I don't know what the advantage or necessity could possibly be. But, I'm not a phone engineer.
Sent from my SM-G955U using XDA-Developers Legacy app

kaiserXDA said:
That is something to consider, since we can't find anything in the standard settings. I'm staying in a motel and the router is relatively close in proximity, 50-60 feet, in a building next door. I've never known or heard of wifi being tied into a proximity sensor. I don't know what the advantage or necessity could possibly be. But, I'm not a phone engineer.
Sent from my SM-G955U using XDA-Developers Legacy app
Click to expand...
Click to collapse
I'll look through some more setting and if I find anything I will post back here.

This was happening on my s7 edge and found found the xfinity app was the culprit.
Sent from my SM-G955U using Tapatalk

I think I found your answer.
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djnikkofb said:
I think I found your answer.View attachment 4230064
Sent from my SM-G955U using Tapatalk
Click to expand...
Click to collapse
No, this is simply do you want your device to scan for wifi networks. This is a standard option.

Thanks for trying. I can't find anything in settings, not in the Developer settings either.
It's bizarre because, as I mentioned, it auto connects when I'm at the motel.
I just checked in and I didn't use my phone for anything for about half an hour or more. I pick it up to use it and as I'm typing a text message I notice the wifi icon in the notification bar. So, it turned itself on when I got here. I went through all the settings and found nothing turned on or that is running in the background.
So, strange.
Sent from my SM-G955U using XDA-Developers Legacy app

kaiserXDA said:
Thanks for trying. I can't find anything in settings, not in the Developer settings either.
It's bizarre because, as I mentioned, it auto connects when I'm at the motel.
I just checked in and I didn't use my phone for anything for about half an hour or more. I pick it up to use it and as I'm typing a text message I notice the wifi icon in the notification bar. So, it turned itself on when I got here. I went through all the settings and found nothing turned on or that is running in the background.
So, strange.
Sent from my SM-G955U using XDA-Developers Legacy app
Click to expand...
Click to collapse
Do you have any apps that auto-connect such as tasker or something else that runs tasks based on time or location? Another thing is to check location-based apps that don't have turn on WiFi automatically when they need it to turn on.
Check out this article, which talks about how to check app permissions. I have my WiFi set to turn on when it comes close to my apartment and turn off the sound when I leave a geographic radius of my apartment. Even if my WiFi is off if my GPS locates that I'm within my apartment's radius, it turns on based on rules I set using MacroDroid.
It may just be an app that has the permission to turn on WiFi when it needs to connect or do SOMETHING with your phone.
PS, I'm making no promises, I'm just thinking Occam's Razor.