Develop Bugs

[Q] No Service. Data working but no Call/Text.

Hello!
I have m919 T-Mobile Galaxy s4 but I'm with other carrier (Wind Canada). I rooted the phone about a month ago, I believe, using THIS guide.
I spent yesterday in environment where I didn't had coverage for most of the day, but i haven't gotten it back yet. Sounds really weird as it might be not connected to the fact at all. I have 4G connection active, which means that I have internet, but it keeps 'searching' for service and I can't Call/Text anyone, neither I can receive calls or texts. Instead of the bar at the top showing how good coverage i have it just shows a crossed out circle icon.
I've tried reboots, keeping my phone off for 30mins without battery, taking out sim and putting it back in, changing network modes and resetting APN (all from settings panel).
Have anyone experienced something like that and how do I fix it? It was working perfectly for last couple of months and the phone didn't get any damage yesterday neither.
P.S Did the the regular factory reset (don't know if it affects rooting) but it didn't change anything. =

I have same problem.
Did you solve it? and how?

Haven't solved it, that was the whole point of my post!

kokozaurs said:
Haven't solved it, that was the whole point of my post!
Click to expand...
Click to collapse
Never had this happen to me. Data works off your signal, something is wickedly wrong. I'd flash the modem again if you are on 4.2.2 bootloader (doesn't matter which rom or android version). If that fails, go intonrecovery, wipe cache, wipe dalvik cache, and wipe data. If that fails, backup your data and Odin flash back to 100% stock. If that fails, more than likely your /efs folder was corrupted.
Sent from my SGH-M919 using XDA Premium 4 mobile app

Please don't create multi thread on the same topic

xdapowerapps said:
Never had this happen to me. Data works off your signal, something is wickedly wrong. I'd flash the modem again if you are on 4.2.2 bootloader (doesn't matter which rom or android version). If that fails, go intonrecovery, wipe cache, wipe dalvik cache, and wipe data. If that fails, backup your data and Odin flash back to 100% stock. If that fails, more than likely your /efs folder was corrupted.
Sent from my SGH-M919 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I think I'm gonna flash it back to 100% stock, but the problem is that I'm on mac and I don't know how to flash it back. Is there any guide on how to do it from MAC platform?
Thanks!!

kokozaurs said:
I think I'm gonna flash it back to 100% stock, but the problem is that I'm on mac and I don't know how to flash it back. Is there any guide on how to do it from MAC platform?
Thanks!!
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=755265
http://forums.techdiscussion.in/sho...Heimdall-Terminal-on-Mac-OS-(Odin-Alternative)
Second one will be more helpful. Good luck! :good:

xdapowerapps said:
http://forum.xda-developers.com/showthread.php?t=755265
http://forums.techdiscussion.in/sho...Heimdall-Terminal-on-Mac-OS-(Odin-Alternative)
Second one will be more helpful. Good luck! :good:
Click to expand...
Click to collapse
Ok, so I got heimdall, and got the recovery.img from the other topic. I followed the steps that was provided in the second link, but nothing much changed, it successfully uploaded the recovery.img, then i did recovery boot with power button + home button + volume up, it did some things with a pirate android guy in the back and thats it, booted up. Not sure if I have everything back to stock or not - either way, the issue with the network hasn't been resolved!

kokozaurs said:
Haven't solved it, that was the whole point of my post!
Click to expand...
Click to collapse
Tried this?
go to settings/more networks/Mobile networks/Network operators/Search now......
It might take a minute or two, then show you some networks it finds. Select your provider and it should list some options for you.
need to see Mobile data with a check, Data roaming checked, network mode should be LTE/GSM/WCDMA(auto connect)
If you KNOW what your APN (access Point Name) is you can check if it's correctly there.
It usually is downloaded with the search for network so just try with whatever is ther for now.
Back all the way out, and power off. Take out the battery, wait like 30 seconds, replace the battery and power on again.
See if you get service and can dial out.
Aloha and Good Luck!

bobolinko said:
Tried this?
go to settings/more networks/Mobile networks/Network operators/Search now......
It might take a minute or two, then show you some networks it finds. Select your provider and it should list some options for you.
need to see Mobile data with a check, Data roaming checked, network mode should be LTE/GSM/WCDMA(auto connect)
If you KNOW what your APN (access Point Name) is you can check if it's correctly there.
It usually is downloaded with the search for network so just try with whatever is ther for now.
Back all the way out, and power off. Take out the battery, wait like 30 seconds, replace the battery and power on again.
See if you get service and can dial out.
Aloha and Good Luck!
Click to expand...
Click to collapse
yep, one of first routines i tried. No difference

kokozaurs said:
yep, one of first routines i tried. No difference
Click to expand...
Click to collapse
Ok, now you might want to call your provider and ask them to remove you from their network and reinsert you again. That procedure will often re-enable normal operation of cellular connectivity.
They will ask you to power down and remove your battery for about a minute, then power up again.
Aloha and Good Luck!

Tried it all
Well im in the same boat here.
I checked the IMEI is correct
i did a full stock MK5 install with Odin without sim inserted and with
*#2263# helps it recognizes the network on the search list (WIND)
but it wont connect (failed to connect try again)
sometimes it connects to 4G and i can use the web
but no calls or sms
i noticed i dont have LTE enabled which ill do tomorrow
i even opened my phone to check that no cables came off as it was in service for a broken screen
tried a different sim from koodo wich also acts weird it connects to data but wont make phone calls or sms
the problems began after its been UNLOCKED (sim free)
any suggestions? im willing to try anything
its been in service 4 times and still they cant figure it out...
thanks!

ph3r0c1ty said:
Well im in the same boat here.
I checked the IMEI is correct
i did a full stock MK5 install with Odin without sim inserted and with
*#2263# helps it recognizes the network on the search list (WIND)
but it wont connect (failed to connect try again)
sometimes it connects to 4G and i can use the web
but no calls or sms
i noticed i dont have LTE enabled which ill do tomorrow
i even opened my phone to check that no cables came off as it was in service for a broken screen
tried a different sim from koodo wich also acts weird it connects to data but wont make phone calls or sms
the problems began after its been UNLOCKED (sim free)
any suggestions? im willing to try anything
its been in service 4 times and still they cant figure it out...
thanks!
Click to expand...
Click to collapse
Ok I found the solution. Apparently I have bought a stolen phone. Check the imei if it hasn't been blacklisted!

[Q] Anyone have resolution to "No Mobile Data" issue on Galaxy S3 AT&T?

I've tried flashing different roms, modems, changing APN and mobile network settings, etc. Can't seem to get it to work. Everything else works just fine on 4.2.2, including cell and mms. Just no data.
Flashed (UPDATED):
cm-11-20140319-NIGHTLY-d2lte (4.4.2)
I747UCUEMJB bootloader
I747UCUEMJB modem
Other Info:
Kernel: 3.4.83-cyanogenmod-ge6f22a5 [email protected] #1
Provider: PTEL (PlatinumTel, a T-Mobile MVNO)
Mobile network type: HSDPA

geesedude said:
I've tried flashing different roms, modems, changing APN and mobile network settings, etc. Can't seem to get it to work. Everything else works just fine on 4.2.2, including cell and mms. Just no data.
Flashed:
cm-11-20140210-SNAPSHOT-M3-d2att.zip
boot_CWM_I747UCDMG2
d2att_I747UCUEMJB_modem
Click to expand...
Click to collapse
I recently had CyanogenMod 11 installed on my phone and I noticed phone calls, messages, and WiFi worked but when I turned my Mobile Data on, It did not work even though it showed it was on. If your issue has not been resolved, I suggest you check this out - http://forum.xda-developers.com/showthread.php?t=2540998.

who is the wireless provider?

mr_legolas said:
who is the wireless provider?
Click to expand...
Click to collapse
It's PlatinumTel (PTEL), which is a t-mobile mvno. I should note that i have the bootloader and the modem matched, have tried factory resets, and even downgraded to previous version (before updating bootloader to latest so i don't brick). Ptel tells me i need to update my APN, which basically was their standard msg... no help there. Thanks.

internethuman said:
I recently had CyanogenMod 11 installed on my phone and I noticed phone calls, messages, and WiFi worked but when I turned my Mobile Data on, It did not work even though it showed it was on. If your issue has not been resolved, I suggest you check this out - http://forum.xda-developers.com/showthread.php?t=2540998.
Click to expand...
Click to collapse
Hi, so... there are bunch of links and downloads on that page... i do have the latest bootloader and modem... can you tell me what you think i should [try to] update to make the mobile data work? BTW, at least on my phone, the mobile data icon doesn't even show. Not even 3G or whatever... thanks for your help.

RESOLVED!
Ugh. So after countless flashes, resets and wipes, turns out that PTEL needed to do a Data RESET on their end. So much misery for such a simple solution that they could have given me. If you're a PlatinumTel user, and this may apply to many other providers, please try telling them to reset their data service for you before trying anything else. Hopefully you won't go through the misery and time wasted that i have gone through.:cyclops:

geesedude said:
Ugh. So after countless flashes, resets and wipes, turns out that PTEL needed to do a Data RESET on their end. So much misery for such a simple solution that they could have given me. If you're a PlatinumTel user, and this may apply to many other providers, please try telling them to reset their data service for you before trying anything else. Hopefully you won't go through the misery and time wasted that i have gone through.:cyclops:
Click to expand...
Click to collapse
good for ya!

geesedude said:
Hi, so... there are bunch of links and downloads on that page... i do have the latest bootloader and modem... can you tell me what you think i should [try to] update to make the mobile data work? BTW, at least on my phone, the mobile data icon doesn't even show. Not even 3G or whatever... thanks for your help.
Click to expand...
Click to collapse
All of them are stock but I personally chose upndwn4par - Full - Features : Odexed, Rooted, Knox Removed because I really didn't know what the other ones did. (PLEASE NOTE : Neither the developer or I are responsible if you brick, or mess up your phone! This also deletes everything on your phone so do backup if you want to save your important files.) When it finished downloading, I put the file on my phone's internal storage (SD card works too) then went into recovery mode using TWRP and installed the rom onto my phone, then while I was still on TWRP, I deleted the cache and data, it then reboot and then I had to set up my phone as if I had just bought it.

PTEL fix for no data connection, broken, not working
geesedude said:
Ugh. So after countless flashes, resets and wipes, turns out that PTEL needed to do a Data RESET on their end. So much misery for such a simple solution that they could have given me. If you're a PlatinumTel user, and this may apply to many other providers, please try telling them to reset their data service for you before trying anything else. Hopefully you won't go through the misery and time wasted that i have gone through.:cyclops:
Click to expand...
Click to collapse
THIS NEEDS TO BE PROCLAIMED!
PTEL locked us out of voice once before, which also required a reset. That was also with a phone change so maybe a security measure? Never thought about it happening with data.
So many hours wasted.
On calling, the PTEL CSR first reset the data, then helped with a new APN. Note that even with the correct settings in an existing APN and the data connection freshly reset, the phone (SGN3) refused to connect, even after a reset. Added APNs had to be deleted, then a new one created, which then connected immediately. (Pissed and happy at once.)
Thanks, @geesedude, for this info; wished I'd found it sooner. (Have to stop assuming that if it doesn't work, must be something I'VE done.)

Glad that the information helped you. Yeah, i mean... since we mess around with our phones, we always first assume it's something we did, which really can't be blamed for thinking that way. Like you, i searched the web for a solution and it was out of desperation that i called ptel, and the CSR happened to suggest it (they were out of ideas, too), and it happened to be the solution. Not sure why they have to do this in the first place, but i am guessing that there are stricter guidelines from TMobile for the MVNOs, and they have to do some things manually. At least now i know to contact them first before spending hours searching for something that may not exist!

8.0 update made mobile data not work

I have the Honor 7x, and recently update to the 8.0 Oreo android update. Immediately after the installed the update in the morning, I noticed that my mobile data was no longer working correctly.
Wifi can connect, I can make phone calls, send text, literally everything else about the phone works perfectly.
A day later I got another update 8.0.0.332, however I am still unable to access my mobile data.
I use At t for my phone service, and do not have any damage to the phone (havent dropped the phone, water damage, etc).
My friend has the exact same phone, with the exact same phone service, and got his update the same day without having any issues.
Thing I have tried in attempt to fix the problem already based on google searches:
I have tried turning my phone into airplane mode, waiting, turning off airplane mode (also with trying a hard reset on the phone).
I have switched my simcard to slot 2.
I have put my simcard in another phone, and verified that the sim card is still working properly (the other phone was able to access data just perfectly).
I have tried turning off 4G data, and putting it back on.
I have tried resetting the APN back to default.
I have tried manually typing in my APN.
I have also tried network setting reset.
And finally, I have tried a factory data reset.
Running out of ideas of what else to try, hoping you guys have some ideas to help me out with this problem
Much thanks.

Flash a ROM and see if that does anything, if you want. Another thing to do is to do what the post below mind says, thanks.
Or join the Telegram Honor 7x group chat lol
MOD EDIT: LINK REMOVED LOL
Forum Rules said:
Self-promotion is forbidden, this includes blogs, social media and video channels etc. Random links will be removed.
Click to expand...
Click to collapse

I have the Same problem
I have the SAME PROBLEM.

firedeepinfire said:
I have the Honor 7x, and recently update to the 8.0 Oreo android update. Immediately after the installed the update in the morning, I noticed that my mobile data was no longer working correctly.
Wifi can connect, I can make phone calls, send text, literally everything else about the phone works perfectly.
A day later I got another update 8.0.0.332, however I am still unable to access my mobile data.
I use At t for my phone service, and do not have any damage to the phone (havent dropped the phone, water damage, etc).
My friend has the exact same phone, with the exact same phone service, and got his update the same day without having any issues.
Thing I have tried in attempt to fix the problem already based on google searches:
I have tried turning my phone into airplane mode, waiting, turning off airplane mode (also with trying a hard reset on the phone).
I have switched my simcard to slot 2.
I have put my simcard in another phone, and verified that the sim card is still working properly (the other phone was able to access data just perfectly).
I have tried turning off 4G data, and putting it back on.
I have tried resetting the APN back to default.
I have tried manually typing in my APN.
I have also tried network setting reset.
And finally, I have tried a factory data reset.
Running out of ideas of what else to try, hoping you guys have some ideas to help me out with this problem
Much thanks.
Click to expand...
Click to collapse
please check...
1)settings
2)wireless and network
3)mobile network
4)access point name
5)select rest to default (From the Top option)
---------- Post added at 07:23 AM ---------- Previous post was at 07:06 AM ----------
Han_UMan said:
I have the SAME PROBLEM.
Click to expand...
Click to collapse
please check...
1)settings
2)wireless and network
3)mobile network
4)access point name
5)select rest to default (From the Top option)

Thanks.
This solution worked for me.

@firedeepinfire did you end up finding a solution to this issue? I am having the exact same problem and I have tried all of the troubleshooting you listed.
Thanks so much in advance!

I got a fix on it
Only one single step to do is
Go to Settings
Back up and reset
Reset
Reset network setting
This fixed my issue...
Cheers

Question No Network Service after latest software update

Hello! I updated my phone to MIUI Global 13.0.7 Stable (SKHINXM) and suddenly my phone has no service. The sim card is fine and working on other phones like it was before the update. Really unable to fix this issue. If it helps, in the testing window the 'Mobile Radio Power' is toggled off and however many times I try to switch it on, it automatically switches off. Please help! Thanks

rishab298 said:
Hello! I updated my phone to MIUI Global 13.0.7 Stable (SKHINXM) and suddenly my phone has no service. The sim card is fine and working on other phones like it was before the update. Really unable to fix this issue. If it helps, in the testing window the 'Mobile Radio Power' is toggled off and however many times I try to switch it on, it automatically switches off. Please help! Thanks
Click to expand...
Click to collapse
13.0.7 Stable (SKHINXM) is a stable beta.
Try to reset the phone or if your bootloader is unlocked flash with this tool
https://forum.xda-developers.com/t/flash-tool-guide-use-xiaomi-flash-tool.4262425/

Will flashing the file lead to me losing all data? Apologies if it's a stupid question

rishab298 said:
Will flashing the file lead to me losing all data? Apologies if it's a stupid question
Click to expand...
Click to collapse
yeap ,use micloud, or Mi phone assistant or others to backup.(wifi).

NOSS8 said:
yeap ,use micloud, or Mi phone assistant or others to backup.(wifi).
Click to expand...
Click to collapse
Okay thank you! Will try it in a few days time once I am able to give it the time needed.

It is happening to me too, I'm on stock 13.0.4 SKHMIXM, bootloader locked, it happened in 13.0.3 too. Sometimes, I see I have no services, no data, no GPS. But WiFi works great, so if I'm in house I don't always see it, but it means I cannot receive call!!!
I tried to enable/disable sim/data/location/airplane/etc nothing works.
Only way to re-make it works is to reboot the phone, and after 2 or 3 weeks it will happen again, this is the price to pay to have cheap chinese phone...

Try booting into Android with Safe Mode. (and disable Airplane Mode if enabled)
Power + Volume Up > Safe Mode
Or try this:
Settings > Updater > Tap on the "13" several times, this will enable additional Updater-features. Download the latest package and install it.
My guess is that your update may have been corrupt.
Other than that.. Factory Reset or connecting phone to PC and flashing ROM using Fastboot & Mi Flash or Terminal.
I've 13.0.7 and everything's flawless.

So the Xiaomi service center told me that it is possibly a motherboard issue. How can a software update suddenly awaken a hardware issue?

So I had not unlocked my bootloader via my Mi account and it needs mobile data for the same and hence I am unable to flash it since my network is still unavailable even after a factory reset. Any other way I can flash my phone with an older version of MIUI or I will have to submit my phone to the service center?

rishab298 said:
So I had not unlocked my bootloader via my Mi account and it needs mobile data for the same and hence I am unable to flash it since my network is still unavailable even after a factory reset. Any other way I can flash my phone with an older version of MIUI or I will have to submit my phone to the service center?
Click to expand...
Click to collapse
I used Google phone to unlock the bootloader you don't need cellular service just change the account phone number to Google phone one to receive the code work ed for me

jefffrom said:
I used Google phone to unlock the bootloader you don't need cellular service just change the account phone number to Google phone one to receive the code work ed for me
Click to expand...
Click to collapse
Could you elaborate the whole process? I do not know how to do this. Thanks

Same issue i am facing after MIUI updation for 13.0.3.0 SJCINXM ... suddenly all networks are vanished ... if i do manual search for networks then i get a message 'Couldn't search for mobile networks' . Voice call is only possible if wifi is enabled.. This is really a horrible experience and i am unable to find out a way to get rid of this situation.. I am using Redmi 9 Prime handset .. Before this update everything was surperb and flawless.

It is still happening with the latest Android 13 and MIUI14, it's frustrating... sometimes when the phone switch wifi/lte/wifi/lte/etc when you go outside, the modem crashes, it internally bootloop and the phone becomes warm and can lose 25% battery in like 15 minutes. Only way is to reboot the phone.

I had a similar problem. Were you able to solve it?

Android 12 update causes the System UI to constantly reload - can't use phone

After applying the Android 12 OTA upgrade today, I can boot into the phone, however it looks like the System UI is constantly stuck instantly crashing upon launch, then reloading. the wallpaper is flickering on and off. I can take calls (and reboot the phone) just about, but I can't open any menu aside from the Power menu, or anything like that. Does anyone have any ideas how to resolve this? I'd try and enable adb mode or something like that but I can't beacuse I can't open any menu. I managed to boot into safe mode, but that had no effect and the problems are still happening.
Sometimes I can get it to briefly show the system icons, but it disappears too quickly for me to be able to do anything. If I was able to open the settings app, i'd be able to put it in USB file transfer mode to get my stuff of it, but I can't even do that.
Using the LG_UP tool, I can downgrade to the previous firmware, however I can't do anything as it then won't accept my encryption pin code. If flash the (broken) latest firmware back on, I can decrypt the phone, but I'm back where I was again where the system UI app just instantly crashes.
Right, so I think it's related to the lock screen. I was able to (somehow) manage to get it to the home screen from where I could open the settings app up and everything was fine, and was able to turn on USB file transfer mode. However as soon as the phone locked again, it stopped working. But it's very wierd.

You could try to do a factory reset. I think you have to start the device while holding one of the two power keys.

Ahkah said:
You could try to do a factory reset. I think you have to start the device while holding one of the two power keys.
Click to expand...
Click to collapse
I think that would work, but i'm trying to avoid doing that as there's still stuff i'd like to get off of it. Maybe a future firmware update may fix this bug.

Most probably there will be no further update. Do you have a chance to take a look at the system protocol via "adb logcat" during the crash? Typically the notorious "com.android.systemui" is the culprit.
PS: In fact it does not matter, but is your device some 820 (G8) or the downgraded version 810 (G8s)?

bergqvistjl said:
I think that would work, but i'm trying to avoid doing that as there's still stuff i'd like to get off of it. Maybe a future firmware update may fix this bug.
Click to expand...
Click to collapse
If you do decide to factory reset, please let us know if it resolved your issue.

idk which g8 you have but my g8 from xfinity just a few hours ago got the ao 12 v40a update and it did the saame thing the bottom screen buttons (home, back, etc ) flashed on n off crazily,
once i figured out the specific recovery mode combo and performed data wipe reset etc
it has seemed to of fixed it, phone calls and messaging are operational are what ive so far checked asa working phone out not recieved any incoming calls yet but messaging works
lmg820qm5
ao12 v40a
on metro pcs service

Ahkah said:
Most probably there will be no further update. Do you have a chance to take a look at the system protocol via "adb logcat" during the crash? Typically the notorious "com.android.systemui" is the culprit.
PS: In fact it does not matter, but is your device some 820 (G8) or the downgraded version 810 (G8s)?
Click to expand...
Click to collapse
It's the G8S. And I didn't have debug mode enabled, so adb doesn't work.

jtkc said:
idk which g8 you have but my g8 from xfinity just a few hours ago got the ao 12 v40a update and it did the saame thing the bottom screen buttons (home, back, etc ) flashed on n off crazily,
once i figured out the specific recovery mode combo and performed data wipe reset etc
it has seemed to of fixed it, phone calls and messaging are operational are what ive so far checked asa working phone out not recieved any incoming calls yet but messaging works
lmg820qm5
ao12 v40a
on metro pcs service
Click to expand...
Click to collapse
Yes, i'm pretty confident if I did a factory reset, it would work fine, but I really don't want to do that until i've got all my stuff off it.

i hear ya, understood, i just thought id fyi,
that the reset, as undesireable as it is. has appeared to fix the issue and phone, is as far as i can determine fully operational . the finger print reader, phone calls, and messaging all work
i just got the phone fixed less than an hour ago, after installing the 40a update a lil before noon or 2 hours ago lol