[Q] CM 12.1 - Phone wont switch from Wifi to mobile data - ONE Q&A, Help & Troubleshooting

My phone won't switch from Wifi back to mobile data when I disable Wifi or move out of range. Mobile bar shows an Exclamation mark. I can make phones calls however. Cycling Airplane mode fixes the issue. This has been a problem for me on all cm 12.1 nightlies up to and including cm-12.1-20150527. No issues with OxygenOS. I have triple checked the mobile APN and it's correct(Same APN as OxygenOS).
Has anyone else experienced this?

Did you manage to solve this?
I still ave the same problem today. I need to go to mobile networks and then Network operators and choose my operator manually. Then it works. I have had it on all roms. I have got it to work a few times, but mostly not. I flash quite many roms...
If wonder if we are the only ones who has this problem?
/ks

Related

[Q] Mobile data disconnects frequently, does not reconnect on toggling

I'm surprised no one else has faced this problem. Mine and 2 other Explorers I have seen have it.
The mobile data gets disconnected on its own. The 'E' symbol from the network icon goes away. But mobile data is marked as enabled in the settings.
Sometimes, toggling mobile data a couple of times does the trick. Sometimes I have to toggle airplane mode then toggle data. Sometimes even this doesn't work and I have to reboot the phone to get data to work.
This disconnection happens every couple of hours, so it is a real pain.
I am using cm9, I had the problem on stock too and on every ROM I have tried.
I have tried marking the network type to 'GSM only' in the 'Testing' menu (from 'GSM/WCDMA auto') as I read somewhere that this solves the problem. Still no luck.
Any help or suggestions would be appreciated. Thank you.
maynihc said:
I'm surprised no one else has faced this problem. Mine and 2 other Explorers I have seen have it.
The mobile data gets disconnected on its own. The 'E' symbol from the network icon goes away. But mobile data is marked as enabled in the settings.
Sometimes, toggling mobile data a couple of times does the trick. Sometimes I have to toggle airplane mode then toggle data. Sometimes even this doesn't work and I have to reboot the phone to get data to work.
This disconnection happens every couple of hours, so it is a real pain.
I am using cm9, I had the problem on stock too and on every ROM I have tried.
I have tried marking the network type to 'GSM only' in the 'Testing' menu (from 'GSM/WCDMA auto') as I read somewhere that this solves the problem. Still no luck.
Any help or suggestions would be appreciated. Thank you.
Click to expand...
Click to collapse
check if your apn is correct or not,
or try to use another sim card
are you facing this problem when you lock your screen?
nit_in said:
check if your apn is correct or not,
or try to use another sim card
Click to expand...
Click to collapse
I guess my apn is correct, since net does work normally (ie. when I'm able to connect). I have tried two sim cards, and know 2 other people who have the same problem, one of them uses a different operator.
nit_in said:
are you facing this problem when you lock your screen?
Click to expand...
Click to collapse
Not necessarily, sometimes it goes off while I'm browsing etc, and then just won't come back on. And keep data always on is enabled in settings, and I don't use any battery saving app.
Any idea what the problem is?
Which rom you are using now?
Check if you have data connection or not.
Did you try to connect internet using the same sim card with another mobile
If another mobile connects to internet then reflash your ROM or try another ROM
hit thanks if helped
sent from my htc pico
maynihc said:
I'm surprised no one else has faced this problem. Mine and 2 other Explorers I have seen have it.
The mobile data gets disconnected on its own. The 'E' symbol from the network icon goes away. But mobile data is marked as enabled in the settings.
Sometimes, toggling mobile data a couple of times does the trick. Sometimes I have to toggle airplane mode then toggle data. Sometimes even this doesn't work and I have to reboot the phone to get data to work.
This disconnection happens every couple of hours, so it is a real pain.
I am using cm9, I had the problem on stock too and on every ROM I have tried.
I have tried marking the network type to 'GSM only' in the 'Testing' menu (from 'GSM/WCDMA auto') as I read somewhere that this solves the problem. Still no luck.
Any help or suggestions would be appreciated. Thank you.
Click to expand...
Click to collapse
Most probably its the problem from your network operator.. i face same problem everyday with BSNL.. there is nothing much you can do.:crying:
nit_in said:
Which rom you are using now?
Check if you have data connection or not.
Did you try to connect internet using the same sim card with another mobile
/QUOTE]
I am using the unofficial cm9.
I have data connection right now. I have used this same sim with my Nokia phone before I got my Explorer without any issues.
Maybe it IS an operator issue, but then there should be many complaints from India about the same thing right?
Click to expand...
Click to collapse
I am from india and having the same problem.
APN is correct and same sim card mobile data is working fine in other phone. Also, in the time of connection establishment and disconnection I cant receive or send any call
hmm
rdagar said:
I am from india and having the same problem.
APN is correct and same sim card mobile data is working fine in other phone. Also, in the time of connection establishment and disconnection I cant receive or send any call
Click to expand...
Click to collapse
whenever i flash new rom
data wrks fine
bt persinally i hv seen that wen i install twitter
it behaves like ur prob n dsnt mtter if i uninstall it
it kps on dscnncting randomly until i flash new rom
it's a network problem, I had the same issue once so I called the network service centre & they told me that they were upgrading the system & recommended me to use the data plan after few hours.. so after few hours I called again & they confirmed that the problem was solved..after that till now I have no disconnection issues.
With BSNL sim card, I have helped so many friends connect to internet properly by creating an APN "bsnlnet". By default HTC and all use the old APN (gprssouth.cellone.in). That connects for a while and disconnects.
And Nokia phones automatically receive a configuration setting message from BSNL but Android doesn't.
Sent from my HTC Explorer A310e using Tapatalk
provider
maynihc said:
I'm surprised no one else has faced this problem. Mine and 2 other Explorers I have seen have it.
The mobile data gets disconnected on its own. The 'E' symbol from the network icon goes away. But mobile data is marked as enabled in the settings.
Sometimes, toggling mobile data a couple of times does the trick. Sometimes I have to toggle airplane mode then toggle data. Sometimes even this doesn't work and I have to reboot the phone to get data to work.
This disconnection happens every couple of hours, so it is a real pain.
I am using cm9, I had the problem on stock too and on every ROM I have tried.
I have tried marking the network type to 'GSM only' in the 'Testing' menu (from 'GSM/WCDMA auto') as I read somewhere that this solves the problem. Still no luck.
Any help or suggestions would be appreciated. Thank you.
Click to expand...
Click to collapse
I've used cm9, cm10, cm10.1, aosp, aokp, jaggy, cm10.2 weekly. It's the same with my TATA DOCOMO sim. I ported to vodafone and with the correctly configured apn settings, its working great. It's definitely a provider problem and has been for the last 2 years.

Nexus 5 Wifi Issue

So I've had my Nexus 5 for roughly around a month and I hadn't experienced any issues others have had with wifi not connecting until now. My N5 will show im connected to my home wifi with full bars, but going into quick settings shows it to be orange. Suggesting there's no data transfer, I cannot use any internet based apps with wifi. I've tried some suggestions, switching my router off then on, rebooting the phone, turning some settings off in the advanced panel in wifi settings. All have failed.
I was just wondering if anyone else has this problem and if anyone has a fix to it.
Dillllz said:
So I've had my Nexus 5 for roughly around a month and I hadn't experienced any issues others have had with wifi not connecting until now. My N5 will show im connected to my home wifi with full bars, but going into quick settings shows it to be orange. Suggesting there's no data transfer, I cannot use any internet based apps with wifi. I've tried some suggestions, switching my router off then on, rebooting the phone, turning some settings off in the advanced panel in wifi settings. All have failed.
I was just wondering if anyone else has this problem and if anyone has a fix to it.
Click to expand...
Click to collapse
There was a thread around here somewhere that suggested turning off your mobile data helped fix this problem, I think it was in the N5 General forums.....here it is:
http://forum.xda-developers.com/showthread.php?t=2550690
Don't know if it'll help or not, just saw your thread and had just looked at the other one, figured I'd toss it out there.
Thanks for the reply, just tried that solution but still no luck.
I have a similar problem except that there are phases of wifi not working.
Sometimes I would have around 20-30 seconds of WiFi not working and there would be no data transfer.
Speeds are still fast when it is working however.
I played a little with only using mobile data and no wifi, and everything worked. (Small sample size however).
Seems like this is a WiFi only issue.
So somehow overnight the wifi has managed to fix itself, will report back if the problem returns.
The issue with the wifi returned unfortunately.
Dillllz said:
The issue with the wifi returned unfortunately.
Click to expand...
Click to collapse
Don't know if you've tried this but change your WiFi frequency band in advanced setting to either "5 GHz only" or "2.4 GHz only," whatever your router uses. Might be worth a try.
Thanks for the help, but I've tried changing some settings in advanced wifi settings but it hasn't worked. Even what you recommended I've tried that before and it didn't work.
wifi issue
Also I have the same issue - Im connected to router by wi-fi, home and work and time by time (5x a day) wifi stops working. Wifi is enabled in settings, but there is no connection. Restart the cellphone helps, but after that, maybe an hour, it appears again.
Issue was in 4.4 and still appers in 4.4.1.
Yet did not found how to solve it.
I have the same issue on my gnex running shiny 4.4, but I also had the same issue on 4.3. Tried the wifi options, nothing worked. Unfortunately, no solution for this device that has to last one more week. The double swipe down and tapping wifi gets the connection back, but it is only a work around.
The N5 connects seamlessly to my home and work wifi. A few days ago, I flashed the hammerhead factory image, TWRP and the 4.4.1 update.
Nexus 5 - wifi not switch automatically from data
pcloadletter1 said:
I have the same issue on my gnex running shiny 4.4, but I also had the same issue on 4.3. Tried the wifi options, nothing worked. Unfortunately, no solution for this device that has to last one more week. The double swipe down and tapping wifi gets the connection back, but it is only a work around.
The N5 connects seamlessly to my home and work wifi. A few days ago, I flashed the hammerhead factory image, TWRP and the 4.4.1 update.
Click to expand...
Click to collapse
Hey,
I have the same problem with 4.4.2.(factory rom, no root or not unlocked). Sometimes the wifi not works and get orange. I must put airplane mode to fix it. Its annoying.
But as well happens to me:
When I go out from office or home (where I have wifi connections saved in phone) the phone automatically switch to data plan from carrier. But when I come back the phone stays with data and there is not automatic switch to wifi. Sometimes it help to put wifi off or always airplane mode on/off for a while.
I do not know if it is normal behave of android but I would like have automatic switch to wifi.
I tried to change wifi details (changing bands, etc.) but not helped.
Please help. Thank you.
Is custom ROM or kernel will fix it??
For some unknown reason, as soon as I updated my router's firmware, the problem disappeared.
Updated Android 6.0 solved the issue
Dillllz said:
So I've had my Nexus 5 for roughly around a month and I hadn't experienced any issues others have had with wifi not connecting until now. My N5 will show im connected to my home wifi with full bars, but going into quick settings shows it to be orange. Suggesting there's no data transfer, I cannot use any internet based apps with wifi. I've tried some suggestions, switching my router off then on, rebooting the phone, turning some settings off in the advanced panel in wifi settings. All have failed.
I was just wondering if anyone else has this problem and if anyone has a fix to it.
Click to expand...
Click to collapse
So I had the unfortunate experience of having my wifi go down while on vacation and for 3 weeks I spent a good chunk of time wiping and reinstalling multiple versions from Cyanogen, Paranoid android and 4.4 - 5.1 to no avail. I just did another factory wipe today and installed the new Android 6.0
The Finger Pointing Game is OVER
Read through 30+ pages of other android users with similar experience and some people send their units back to LG and some even managed getting a new handset. There was never any hardware issues with my unit I just couldn't turn on the WiFi but after the install WiFi works? Guess next time you push a software update to our Phones CHECK YOUR SH*T google and Maybe DON'T Take 3 months to FIX your F*CK Up.
I have a similar issue. Since Lollipop my phone almost never automatically connects to my WiFi anymore. What's wrong?

[Q] Very strange mobile data issue

Myself and my partner have recently purchased an Xperia Z3 each running Android 4.4.4 and love it but experiencing a very strange issue with mobile data.
Periodically on both our devices we lose mobile data (no 4G, H/H+ symbol) despite have a good connection. A phone restart fixes the problem but this happens all time and usually when reception is lost and then rejoined. Turning airport mode on does not fix the issue.
We are both on the UK Three Mobile network and have entered the correct APN settings.
Very strangely I have discovered the if I change just the "APN" entry to any random text then go back to mobile network settings the data instantly appears and works again for a period of time! This saves a reboot but the issue returns again once reception is lost The official setting for apn is "three.co.uk" but the issue still happens. Very strange that changing just the apn name to anything random fixes it for a bit.
I'm hoping the lollipop update fixes this issue but not holding up hope, any suggestions, or has anyone seen this issue? I suspect this a network issue but have already changed sim cards with no luck.
Also this issue occurs regardless of location and on both our identical devices. Have carried out factory resets too but no joy.
thedude56 said:
Myself and my partner have recently purchased an Xperia Z3 each running Android 4.4.4 and love it but experiencing a very strange issue with mobile data.
Periodically on both our devices we lose mobile data (no 4G, H/H+ symbol) despite have a good connection. A phone restart fixes the problem but this happens all time and usually when reception is lost and then rejoined. Turning airport mode on does not fix the issue.
We are both on the UK Three Mobile network and have entered the correct APN settings.
Very strangely I have discovered the if I change just the "APN" entry to any random text then go back to mobile network settings the data instantly appears and works again for a period of time! This saves a reboot but the issue returns again once reception is lost The official setting for apn is "three.co.uk" but the issue still happens. Very strange that changing just the apn name to anything random fixes it for a bit.
I'm hoping the lollipop update fixes this issue but not holding up hope, any suggestions, or has anyone seen this issue? I suspect this a network issue but have already changed sim cards with no luck.
Also this issue occurs regardless of location and on both our identical devices. Have carried out factory resets too but no joy.
Click to expand...
Click to collapse
I dont think device has any fault..if ur device is unlocked u can try another sim card and see if issue persists..
U can try deleting all apns and download via settings menu...amd try..
Thanks for the reply, have tried removing all apn settings and re-adding but no luck
Our phones are factory unlocked so will try and test with another network sim, if I can find one...
Wish the lollipop update would come out already so I can test with that.
Cheers

No mobile data on CM 12.1

I am having a problem using mobile data on CM 12.1 Nightlies....There seem to be no other issues with wifi or anything but I cannot connect to mobile data. The icon in the status bar constantly changes between no service at all, to cellular service but no data, to no sim card, and seems to eventually settle on the cellular icon with an exclamation. I am currently running ViperOneM8 4.3 and have no problems with data there. Solution or Troubleshoot?
Thanks in advance.
Try turning on Airplane Mode and reboot. Usually solves data probs for me
Save the Manuals!!!
I was having the same issue. Did the airplane mode/reboot work?
UPDATE: This didn't work for me.

LG G3 D850 (AT&T) Data Connection Issue

Hello,
I have bought LG G3 D850 8 months ago.
It is a rooted mobile with FULMICS 5.1 rom installed. There was a problem with mobile battery timing.
for this issue i installed XPOSED Framework and after it everything work perfect.
I use wifi mostly and i did not try even once to use data connection.
Now after 7 months here is a problem with mobile network.
everything was working perfect now after 7 month when i enable wifi connection then sometime mobile signal drop and then search for network and after 1 or 2 second network back to normal mode but wifi keep working perfect.
NOW, The main issue is my Data Connection, when i enable data connection then sometime it work perfect and mostly as usual it drops signals randomly and search for network and continually repeat same issue unlimited time a day.:crying:
i have tried different apps even i make changes to Build.prop but no born fruit.
BUT WHEN I DELETED MY APN SETTINGS AND THEN I ENABLE MY DATA CONNECTION SO NO ISSUE OF SIGNAL DROPING. BUT WHEN I SET UP APN SETTING THE ISSUE IS SAME AGAIN.
The issue is same and still persist.
ANYONE CAN HELP ME ABOUT THIS ISSUE.
ABOUT SIGNAL DROPPING WHEN I TURN ON DATA CONNECTION.
HELP ME PLEASE.

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