Question OOS 12.0.0 Stable Update Cellular Network Fix

[xda9791]

Hi,

As you may know most of us is having this issue after the OOS 12.0.0 Stable Update, Cellular Network lost, No Signal, Outgoing call, and SMS.

The below method worked at least for me, let me know if worked with anyone of you please.

Please follow these steps :

1- Turn off your phone.
2- hold press volume-down button with power button.
3- keep holding these two buttons until fastboot recovery screen appears.
4- choose English.
5- you will see three options, Wipe data, reboot, and turn off.
6- tab "reboot".
7- when the phone boots normally, the signal is back .

 

[Jomsha]

Not working for me

 

[Anonymouze]

Hi,

As you may know most of us is having this issue after the OOS 12.0.0 Stable Update, Cellular Network lost, No Signal, Outgoing call, and SMS.

The below method worked at least for me, let me know if worked with anyone of you please.

Please follow these steps :

1- Turn off your phone.
2- hold press volume-down button with power button.
3- keep holding these two buttons until fastboot recovery screen appears.
4- choose English.
5- you will see three options, Wipe data, reboot, and turn off.
6- tab "reboot".
7- when the phone boots normally, the signal is back .

I wonder if that works. You only reboot your system...

 

[gregs4623]

can I use the with LE2125?

 

[xda9791]

Not working for me

I used to have internet connection, and I receive calls & SMS, But I cannot make outgoing calls and SMS.

try to follow these methods in link below, also it keeps updated so check regularly

Mobile Network not working on OnePlus 9 after OxygenOS 12 Android 12

This guide will show you how to fix the issue of the mobile network not working on the OnePlus 9 after the OxygenOS 12 Android 12 update.

www.droidwin.com

 

[xda9791]

I wonder if that works. You only reboot your system...

surprisingly it did, the original method is to wipe the cache in recovery screen, however, somehow I do not have the advanced reboot option in developer options...

 

[xda9791]

can I use the with LE2125?

I can't confirm that, but you can try anyways.

 

[Jomsha]

I used to have internet connection, and I receive calls & SMS, But I cannot make outgoing calls and SMS.

try to follow these methods in link below, also it keeps updated so check regularly

Mobile Network not working on OnePlus 9 after OxygenOS 12 Android 12

This guide will show you how to fix the issue of the mobile network not working on the OnePlus 9 after the OxygenOS 12 Android 12 update.

www.droidwin.com

I dont have the Advanced Reboot option unfortunately... And APN delete and update not working either..

 

[sunxutian]

my case is worse, my sim card cannot be detected and shows as NO SIM, this is horrible

 

[Anonymouze]

my case is worse, my sim card cannot be detected and shows as NO SIM, this is horrible

I also tried paranoid android alpha, the SIM was permanently activating and deactivating...

 

[pgrey2]

Has ANYONE figured out how to clear the cache (partition) ?
I updated yesterday, without reading anything first (I figured it was "stable", right ... ), and now I can't get my mobile-network to work (either 5G or reverting to 4G, including APN reset, etc) for more than a few seconds at-a-time.
I chatted w/support, who of course told me to clear the cache (I've had this fix other network issues in the past, stale DNS and such), and seemed puzzled that the option doesn't exist, in Recovery-Mode, you can only do a full-format, period...
So, I'm hoping someone here figured it out?

 

[Jomsha]

Has ANYONE figured out how to clear the cache (partition) ?
I updated yesterday, without reading anything first (I figured it was "stable", right ... ), and now I can't get my mobile-network to work (either 5G or reverting to 4G, including APN reset, etc) for more than a few seconds at-a-time.
I chatted w/support, who of course told me to clear the cache (I've had this fix other network issues in the past, stale DNS and such), and seemed puzzled that the option doesn't exist, in Recovery-Mode, you can only do a full-format, period...
So, I'm hoping someone here figured it out?

Yea , same problem here.
You can receive sms and calls. But you can't calling or sending sms... Mobile Data also working.. it's frustrating.
Support say clean cache. But there is no option to do so.. lame

 

[pgrey2]

Yea , same problem here.
You can receive sms and calls. But you can't calling or sending sms... Mobile Data also working.. it's frustrating.
Support say clean cache. But there is no option to do so.. lame

Yeah, similar, except that I can only get *some* SMS, or perhaps "delayed" might be more accurate.
As such, I'm sort of locked out of both my Authenticator apps, which seem to not like the fact my mobile-data is sketchy (seems reasonable, actually), and then want to reset things, of course using SMS, but they require the codes to be "timely", which circles back...
Support is lost, if you ask me, they seemed confused about the cache issue, until I sent a pic, and then they just wanted to wrap up the chat, with no actual solution, other than "we'll have someone contact you in 24-48", which I seriously doubt will happen.
It's weird, almost like OP doesn't realize people use their phones for critical tasks, or they don't care, it's hard to say. If you go back and read some of the B2 threads (apparently the last B2 build was the release), it's more obvious that you shouldn't upgrade, and I wouldn't have, if OP had mentioned this, anywhere, in the release-notes...
I shut down backup/restore, right away, so I have a A11 backup, sitting there, now I just need to go find the right APK (support also had no clue there) and matching MD5 (yeah, I'm sort of paranoid about this), and cross my fingers, toes, and more... ;-]

 

[Bunecarera]

Has ANYONE figured out how to clear the cache (partition) ?
I updated yesterday, without reading anything first (I figured it was "stable", right ... ), and now I can't get my mobile-network to work (either 5G or reverting to 4G, including APN reset, etc) for more than a few seconds at-a-time.
I chatted w/support, who of course told me to clear the cache (I've had this fix other network issues in the past, stale DNS and such), and seemed puzzled that the option doesn't exist, in Recovery-Mode, you can only do a full-format, period...
So, I'm hoping someone here figured it out?

Stupid suggestion, but have your tried swapping Sim slots?

That seems to work for some people for getting 5g back...

 

[davidz85]

hello all, same issue here.

i tried everything besides wiping data completely .

i do not want to do this before there is 100% confirmation that this can help.

about the suggested solution of trying the 2nd SIM card slot... i can see 2 sim cards options in cellular settings, but i dont see any other physical slot in my device to enter my SIM card, so i cannot try this method.

i dont understand how there is not patch for it, what we suppose to do in this case?

Thanks.

 

[Bunecarera]

hello all, same issue here.

i tried everything besides wiping data completely .

i do not want to do this before there is 100% confirmation that this can help.

about the suggested solution of trying the 2nd SIM card slot... i can see 2 sim cards options in cellular settings, but i dont see any other physical slot in my device to enter my SIM card, so i cannot try this method.

i dont understand how there is not patch for it, what we suppose to do in this case?

Thanks.

My 9pro has a second slot, marked SIM2, on the other side of SIM1...

 

[davidz85]

Yes, but even if i had the 2nd sim card slot, im not sure that this would have been solved this mobile network issue.

 

[Porquiplane]

How to wipe caches:

Requirements- Root, computer, platform-tools

How to -

Dalvik through adb:

sdk/platform-tools/adb shell

shell@android:/ $ su system
system@android:/ $ cd data/dalvik-cache/
system@android:/data/dalvik-cache $ rm *
system@android:/data/dalvik-cache $ exit
shell@android:/data $ exit

Or

Cache through fastboot:

sudo su
fastboot erase cache

 

[davidz85]

Will it do the trick in this case?

edit - maybe wiping all data completely will fix this issue?

 

[Bunecarera]

Yes, but even if i had the 2nd sim card slot, im not sure that this would have been solved this mobile network issue.

Which version do you have?
EU?
T-Mobile?