No Mobile data after custom Rom flash - OnePlus 7 Pro Questions & Answers

So I posted earlier that I was unable to make or receive calls after flashing havoc os.
What I've noticed is mobile data is greyed out and states NO Sim Card.
Sim card is 100% working as I used it in this phone before the flash and have been using it on my pixel 2 while I try to sort this phone out
I've looked at vids and posts about this topic but no luck

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XT926, sim card problem

Hello all,
I recently got the XT926 from Ebay. The phone had CM 10.2 ROM installed when I got it and it could detect my SIM card. Everything worked almost fine. I was able to access the internet through HSDPA and I was able to make calls. However I had issues with not being able to send SMS and MMS. I couldnt save the SMSC number so I decided to install the stable release of CM 10.1. I wiped, and flashed CM10.1 using TWRP that already existed in the phone. Now, after that, the phone will no longer detect any SIM cards no matter what operator or ROM I use. I live in Sweden and I'm using the GSM network. Wifi and all other functions work fine.
I even installed the official VRZ_XT926_9.8.1Q-79-1_CFC.xml but still its not able to bypass the activation screen because it wont detect any sim cards.
Any idea or suggestions on how to fix this?
Thanks in advance

[Q] Wont recognize SIM card after flashing rom on MOTO G PLEASE HELP!

Hello, i recently thought about flashing a rom on my phone, i did all the basic stuff unlock boot loader, root etc but when i put the file on my device i got stuck in a bootloop, so i panicked a little and went on to google to find a STOCK ROM for the moto g. I found one and flashed that instead, it did infact save my device and i was so happy at the point, but then i noticed that at the top on my task bar it said i had no signal on BOTH Sdcards when infact this phone only has 1!? (my o2 simcard was in at the time) Anyway i went into setting and it had above he wifi setting "Dual SIM settings" which i have never even seen before. Anyway i clikced on that and it says 'SIM1 Disabled' and below it says 'SIM2 Disabled' Also my Mobile DATA has vanished to. All this worked before i went and screwed up my device. Im kind of in a panic and really dont want to loose this phone :crying: :crying: Please can anyone help get me back my signal and data, other then that everything else is working normal.
Screenshots Attached.
Pastyslayer said:
Hello, i recently thought about flashing a rom on my phone, i did all the basic stuff unlock boot loader, root etc but when i put the file on my device i got stuck in a bootloop, so i panicked a little and went on to google to find a STOCK ROM for the moto g. I found one and flashed that instead, it did infact save my device and i was so happy at the point, but then i noticed that at the top on my task bar it said i had no signal on BOTH Sdcards when infact this phone only has 1!? (my o2 simcard was in at the time) Anyway i went into setting and it had above he wifi setting "Dual SIM settings" which i have never even seen before. Anyway i clikced on that and it says 'SIM1 Disabled' and below it says 'SIM2 Disabled' Also my Mobile DATA has vanished to. All this worked before i went and screwed up my device. Im kind of in a panic and really dont want to loose this phone :crying: :crying: Please can anyone help get me back my signal and data, other then that everything else is working normal.
Screenshots Attached.
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Click to collapse
You have flashed a single sim variant of the stock ROM on your device, find the dual sim version for your phone here: http://sbf.droid-developers.org/phone.php?device=14
Also, of course your data has gone as your phone has undergone a reset and firmware flash
All of them are not for 4.4.4 or does that not matter?
TechMinerUK said:
You have flashed a single sim variant of the stock ROM on your device, find the dual sim version for your phone here:
Also, of course your data has gone as your phone has undergone a reset and firmware flash
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Click to collapse
Absolutely. From experience, you must flash the dual sim variant. Unfortunately, there is 4.4.4 available, but only for the States. You might PM me the OTA update package and I'll be able to help.
Sent from my XT1022 using XDA Premium 4 mobile app
Cant find it?
Cant find any for O2 uk or retail UK or duel sim or even 4.4.4
I Messaged you please reply. im abit of a noob to this website haha

Problems with mobile data s6 duos

Hi there,
Recently, I've been having mobile data problems with my s6 duos
I've got an s6 duos from globe, so 1 sim slot is locked to globe and the other sim slot is open line. Recently I've been having problems connecting to mobile data using my smart sim card. In the data service network, the option to choose smart for mobile data is locked/unavailable, so I can only use my globe simcard for mobile data. I've tried using a different sim but no luck.
I was able to use my smart sim for mobile data in the past. Though I have no problem receiving texts or calls with my smart sim
Advice is much appreciated
Thanks
Also, in APN under my smart sim, I get this message
"Unable to view the access point name settings. Access is restricted for the current user profile."
i64.tinypic.com/2i1kprd.png
My guess... flash BTU ... latest UK g920F firmware. Its kind of imposible to lock 1 sim and the 2nd sim to be unlocked.
Edit: you may lost warranty after this... and this is only my guess.
Edit2: flash a costom recovery... do a full backup so if something goes wrong you restore everything
lummujaj said:
My guess... flash BTU ... latest UK g920F firmware. Its kind of imposible to lock 1 sim and the 2nd sim to be unlocked.
Edit: you may lost warranty after this... and this is only my guess.
Edit2: flash a costom recovery... do a full backup so if something goes wrong you restore everything
Click to expand...
Click to collapse
Thanks for replying! I've never really done something like that before.. so if you could give me links and let me know what are the risks of flashing?
also my unit was purchased locally in the philippines, will a uk firmware work with it?
In settings search "profile" if the cell phone finds any ,post a screenshot of if... and you find firmware at samfirmware.com... or a guy have posted them in general section uploaded in google drive for better speed download
lummujaj said:
In settings search "profile" if the cell phone finds any ,post a screenshot of if... and you find firmware at samfirmware.com... or a guy have posted them in general section uploaded in google drive for better speed download
Click to expand...
Click to collapse
Thanks!
No results when i searched profile in the settings.
Will trying flashing a new firmware
Am curious, will unlocking my phone also solve the problem?
LanceD. said:
Am curious, will unlocking my phone also solve the problem?
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Click to collapse
I had the g920FD... the phone use one EFS for both imeis. I said it cannot be 1 sim lock and 1 seem free. The phone for sure contain something installed from provaider to restrict the sim1. I would flash new version. But as i said 1st ill flash recovery to do full nandroid backup

Visible SIM not recognized in rooted OP7 Pro unlocked

I checked my IMEI on Visible's website and it checked out. I am running the Android 11 Pixel Experience ROM and Google Fi SIM worked fine, but I cannot get the Visible SIM to even be recognized as existing in the tray. I tried both SIM slots. Does this have something to do with being rooted? Ironically I installed this SIM in my Poco F3 which is NOT compatible, and although I got no service, that phone did recognize the SIM and even all of the Verizon APNs. Just wondering if you guys have any thoughts? Thanks.
tuffluck said:
I checked my IMEI on Visible's website and it checked out. I am running the Android 11 Pixel Experience ROM and Google Fi SIM worked fine, but I cannot get the Visible SIM to even be recognized as existing in the tray. I tried both SIM slots. Does this have something to do with being rooted? Ironically I installed this SIM in my Poco F3 which is NOT compatible, and although I got no service, that phone did recognize the SIM and even all of the Verizon APNs. Just wondering if you guys have any thoughts? Thanks.
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Click to collapse
It shouldnt have anything to do with being rooted, but if you have converted/changed firmware then that could be the issue.
If you have the engineering mode app installed u can check the sim in *#808# or by adb shell am start com.oneplus.factorymode/.manualtest.SimCardTest . If the test fails then the modem or your efs is messed up.Hopfully you have a efs back up. Try starting over with MSM flash first.I believe the fail sim is caused buy a key that is in the locked sfs folder of the efs. I do know for a fact there is a RSUprivate key there also. And have obtained it. But still have not found a way to write this back, other then efs restore in twrp.
I'm guessing it is related to the ROM.
tuffluck said:
I checked my IMEI on Visible's website and it checked out. I am running the Android 11 Pixel Experience ROM and Google Fi SIM worked fine, but I cannot get the Visible SIM to even be recognized as existing in the tray. I tried both SIM slots. Does this have something to do with being rooted? Ironically I installed this SIM in my Poco F3 which is NOT compatible, and although I got no service, that phone did recognize the SIM and even all of the Verizon APNs. Just wondering if you guys have any thoughts? Thanks.
Click to expand...
Click to collapse
I'm on visible and I'm using an unlocked T-Mobile gm1915. When on the global rom, it gave me a pop up to instructions for using the verizon sim on a cdma-less device. However, I didn't have to do anything and the sim started randomly working after waiting 5-10 minutes. So, i recommend just leaving the sim in for atleast 10 min and have mobile data on.

error while searching for networks

Hi, I have an issue with my TMO Oneplus 8 IN2007, it dosent have signal, it recognize the sim card but when i tap in network operators, it give me this msg "error while searching for networks"
1. Tried different sims cards (The phone is recognizing the sim cards, but still giving me no signal).
2. I unlock my phone using the tmounlock app, try different companies sim card, and still didnt work
3. Convert to global and still no signal.
I have read something about TWRP and restoring the modem.img, do you think that will fix the issue ? or what else can I try ? ( Currently im using global version, and i have the bootloader unlocked )

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