Does T-Mobile OP8 5G Support Dual-Sim if on Global Firmware?

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VovaKhari

New member
Feb 8, 2022
4
1
The phone sees two SIM cards, but the second does not destroy the signal.
There is a person who understands the system partition, I, that there is such a memory section that is responsible for the operation of the baseband for two SIM cards, but on the tmobile version it is blocked, you need to edit this section and both SIM cards will work.
Help pls
 

VovaKhari

New member
Feb 8, 2022
4
1
I'm trying to find a way to get the second SIM card to catch the network.
In general, with the help of QPST, I made a backup and started looking, looking for imei for a second SIM card
found interesting lines
There are two arrays for sim1 and sim2
But for sim2 the array is not full.
I am attaching screenshots.
there is no second imei.
I think there is a person who understands this and will be able to correctly register imei
SIMIMEI.png
 
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daxiaamu

Senior Member
Mar 11, 2011
152
145
www.daxiaamu.com
I'm trying to find a way to get the second SIM card to catch the network.
In general, with the help of QPST, I made a backup and started looking, looking for imei for a second SIM card
found interesting lines
There are two arrays for sim1 and sim2
But for sim2 the array is not full.
I am attaching screenshots.
there is no second imei.
I think there is a person who understands this and will be able to correctly register imeiView attachment 5534443
There is a tool to patch *.xqcn file for dual sim , I tried, but useless. Here is the tool
 

badshah99

Senior Member
Jul 2, 2016
108
41
OnePlus 8
I'm trying to find a way to get the second SIM card to catch the network.
In general, with the help of QPST, I made a backup and started looking, looking for imei for a second SIM card
found interesting lines
There are two arrays for sim1 and sim2
But for sim2 the array is not full.
I am attaching screenshots.
there is no second imei.
I think there is a person who understands this and will be able to correctly register imeiView attachment 5534443
just copy that and paste under array sim 2
 

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  • 1
    Yes I have successfully convert my T-Mobile OnePlus 8 to global ROM and now I have dual sim compatibility.
    1
    Did you try using 2 sim cards ? Both working fine ? If yes, please share the guide with us. Thanks.
    1. First of all unlock bootloader and u also have permanent sim unlock from t-mobile.
    2.After unlocking your phone will restart, setup your oneplus 8 and enable developer mode and in developer mode enable "usb debugging" .
    Note: You must have working adb/fastboot drivers.
    3. now restart your phone to bootloader.
    4. Download any android 10 fastboot Rom from xda developer.
    "I have tested this : https://sourceforge.net/projects/fastbootroms/files/OnePlus 8/10.5.9-EUROPE-OnePlus8Oxygen_15.E.18_OTA_018_all_2007160043_913306-FASTBOOT.zip/download
    4.1. For flashing this rom your phone has to be in fastboot mode.
    5. After downloading extract the rom and open extracted folder and double click "flah_all.bat
    5.1.connect your phone to computer in fastboot mode and enter "Y"
    wait for 5 to 7 minutes, in this process your oneplus will restart to recovery mode but never unplug the cable or use your phone during installation.

    Note: i have tested dual sim with dual sim tray.
    1
    That's so weird. I flashed the same version if EU ROM but didn't get dual SIMs. Do you remember which version if TMO ROM before flashing EU.10.5.9?
    Thanks
    Brother after flashing eu10.5.9 just update your OnePlus to latest 11.0.8.8 (because dual sim compatibility is only available in android 11/oxygen 11) and then lock the bootloader after locking your phone will rest and u will see dual sim compatibility after setup.
    Maybe looks wired but works for me
    1
    Brother after flashing eu10.5.9 just update your OnePlus to latest 11.0.8.8 (because dual sim compatibility is only available in android 11/oxygen 11) and then lock the bootloader after locking your phone will rest and u will see dual sim compatibility after setup.
    Maybe looks wired but works for me

    Hi man, can you make calls on both sims?, im on Global 11.0.8.8 and i can see both sims but just the sim1 is working the sim2 doesn't work
    1
    Yes I have successfully convert my T-Mobile OnePlus 8 to global ROM and now I have dual sim compatibility.
    Aoa, did you get both of your IMEIs changed? By default they patch only 1st IMEI but seems like you got your 2nd one patched as well after converting the phone?