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I was curious as a colleuge of mine recently purchased the OP8 5G from T-Mobile rather than directly from OnePlus. The sim tray only supports one SIM, and I am assuming that as it has been done historically on prior OP devices, the T-Mobile OP software only supports one sim card. I am unsure as to whether the T-Mobile variant has hardware to support two sims or not, but I think it may only a software issue. Would rooting and flashing to get onto the Global firmware enable dual-sim support for a OP8 5G T-Mobile variant?
Thank you,
I'd assume so. I'm planning on trying this myself when my dual sim slot comes in from Shenzhen.
tri_cchan said:
I'd assume so. I'm planning on trying this myself when my dual sim slot comes in from Shenzhen.
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What is the dual sim's use case for you? International travel or work/personal use?
I think in Asian countries, people often get 1 cheap SIM for cheap voice plan and another SIM for cheap data plan.
iKevin said:
What is the dual sim's use case for you? International travel or work/personal use?
I think in Asian countries, people often get 1 cheap SIM for cheap voice plan and another SIM for cheap data plan.
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In my colleague's case, for work and personal use. I personally have my OP7 Pro as my work phone, and it is the unlocked non-carrier variant, so the dual sim support is there. However, for my use, too, I would like to have the capability available on my T-Mobile OP8 5G just as my colleague. I had him order a dual-sim tray from eBay, and from a US seller to get the item faster. If it works for him, I'll likely order the dual sim tray.
i dont think the global or eu roms support dual sim. there was a disclaimer under the network & sim settings untill ob1. not sure if ob1 supports dual sim yet
Dual sim works, however, i cant get my Verizon sim to work with t-mobile. I get the CDMA-less notification, i read that you can get it to work, you just got to call verizon to register your imei with them so dual sim can work. This is running open beta, stable 10.5.12 wouldnt see my second sim.
I havent called them because my verizon sim is through work.
esjames said:
Dual sim works, however, i cant get my Verizon sim to work with t-mobile. I get the CDMA-less notification, i read that you can get it to work, you just got to call verizon to register your imei with them so dual sim can work. This is running open beta, stable 10.5.12 wouldnt see my second sim.
I havent called them because my verizon sim is through work.
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And, this is on a T-Mobile OP8 5G? If so, I wonder if my colleague would have any issues running two T-Mobile SIMs on a global ROM? (I suspect the T-Mobile software doesn't even recognize a second SIM).
SimranSingh said:
And, this is on a T-Mobile OP8 5G? If so, I wonder if my colleague would have any issues running two T-Mobile SIMs on a global ROM? (I suspect the T-Mobile software doesn't even recognize a second SIM).
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Yes, this is on my t-mobile OP8. I converted to global because I prefer global. I haven't tried two t mobile sim cards, and I haven't tried using t mobiles firmware.
esjames said:
Yes, this is on my t-mobile OP8. I converted to global because I prefer global. I haven't tried two t mobile sim cards, and I haven't tried using t mobiles firmware.
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So, after receiving the dual sim tray, and inserting two SIM's on T-Mobile's software--it does not even recognize the second SIM. What particular guide did you use to port over to the global firmware? Thanks!
I would also be really interested in knowing how to get the second SIM to read on the T-Mobile IN2017 variant of this phone. I've been tearing my hair out trying to get this to work, now that I've seen that the international models running Android 11 OB2 seem to have functional dual SIM. Personally, I kind of gave up on getting Android 10 to do dual SIM- even with the European ROM (which I'm fairly certain is the only way dual SIM on this device was ever officially supported by OnePlus), I haven't gotten it, but I think I'm annoyingly close. T-Mobile MSM to Global 10.5.12 to Android 11 DP2 will get you non-functional dual SIM- the device will see both SIM cards, and will properly identify them and their phone numbers, but the second SIM won't connect to voice or data, no matter what I do. If I upgrade the device from DP2 to OB2, the dual SIM UI stays (if I go directly from Global to OB2, it doesn't show), but the second SIM slot is still non-functional- no service for voice or data on the second SIM.
For anyone who has gotten a T-Mobile OP8 to properly read two SIM cards, I'd really like to know how- through my hours of messing around with this thing, it always seems like one step forward and two steps back. Hopefully the final release of Android 11 clears this up.
(My two SIMs are from T-Mobile and AT&T, respectively. Unfortunately, I don't think two T-Mobile SIMs has a chance of ever working with this setup on any firmware- "SIM 1" and "SIM 2" share an IMEI. While that's probably okay for SIMs from different carriers, that's not going to fly on the same carrier- it will look like a cloned IMEI to the network, and probably get shut down fairly quickly.)
Has anyone managed to make it work the Oneplus 8 (pro) unlocked USA version with 2 sims at the same time ? Thank you
It's working on mine with second simbtray however there is no service with both inserted. BecUzebitvhas the same IMEI as slot 1
esjames said:
Yes, this is on my t-mobile OP8. I converted to global because I prefer global. I haven't tried two t mobile sim cards, and I haven't tried using t mobiles firmware.
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Click to collapse
I did the same thing to mine but I'm just seeing one imie active and usually it's 2
angelosabatini said:
Has anyone managed to make it work the Oneplus 8 (pro) unlocked USA version with 2 sims at the same time ? Thank you
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Click to collapse
I'd also like to know
Yes I have successfully convert my T-Mobile OnePlus 8 to global ROM and now I have dual sim compatibility.
haseebali55554 said:
Yes I have successfully convert my T-Mobile OnePlus 8 to global ROM and now I have dual sim compatibility.
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Did you try using 2 sim cards ? Both working fine ? If yes, please share the guide with us. Thanks.
dedsecdz said:
Did you try using 2 sim cards ? Both working fine ? If yes, please share the guide with us. Thanks.
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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.
haseebali55554 said:
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.
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we dont need to root ?
we dont need to back up modem and persist as well?
aviator.OO7 said:
we dont need to root ?
we dont need to back up modem and persist as well?
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I haven't face any fingerprint or network signals problem after converting.
haseebali55554 said:
I haven't face any fingerprint or network signals problem after converting.
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do i need to root to begin with ?
TO CLARIFY THIS IS A ROOT ONLY FIXAfter gaining root install given module.
Data is now retained. Even after reboot(s).
No empty slot or waiting.
Issue is TMO variant is showing muli sim.
So props were added to make it like a conversion to single sim....
Yes module works for both models.
Install & enjoy
Extract and pull it apart if interested .
Please give amazing thanks
to @twinnfamous for building module & bringing this data/sim nightmare to an end
Can confirm this worked and solved my stupid "no sim" error after upgrading from 11.10.10 global to c44.
Worked perfectly on TMobile converted to global. With the issue of having no signal after 12 update.
Thank you @twinnfamous for making the module and thank you @Libra420T for sharing !! You both saved my A$$!
Is this the only way to get data working? I have a NA global variant that doesn't support dual SIM and seems to have the same issue. Honestly really liking ColorOS besides this... I usually don't root but if I don't have a choice, I guess that's what I'll do.
Thanks much. This worked perfectly after I figured out how to root C.62!
Libra420T said:
TO CLARIFY THIS IS A ROOT ONLY FIXAfter gaining root install given module.
Data is now retained. Even after reboot(s).
No empty slot or waiting.
Issue is TMO variant is showing muli sim.
So props were added to make it like a conversion to single sim....
Yes module works for both models.
Install & enjoy
Extract and pull it apart if interested .
Please give amazing thanks
to @twinnfamous for building module & bringing this data/sim nightmare to an end
Click to expand...
Click to collapse
thanks so much! I reflashed with msm multiple times and then kept upgrading to 12 since I thought I was doing something wrong, this fixed the SIM issue. now working great!
Hey dear my device OnePlus 9 T-Mobile
After rollback to stock T-Mobile
By unbrick msm tools
Stock T-Mobile not like first time
Sim card always disconnected and reconnected . Any solution?
This is support a Indian firmware?
badlucky said:
Hey dear my device OnePlus 9 T-Mobile
After rollback to stock T-Mobile
By unbrick msm tools
Stock T-Mobile not like first time
Sim card always disconnected and reconnected . Any solution?
Click to expand...
Click to collapse
You need to make sure that the msm tool manager is for your version that shipped with your phone, as well as the right android version number. Only then will you be able to generate a modem from your service provider.
If that doesn't work, I would try to msm to different versions of your T-Mobile vairent (LE2117). You should have rolled back to like 11.2.2 unless you have the Indian version. Idk what the first version was. my guess is that you used an msm tool that didn't include the Indian T-Mobile vairents.
Dear . I'm use msm to flash global firmware then im rollback to T-Mobile
This file sim card fix only on global firmware? Or for both (glo & India ) .
? Any new T-Mobile msm tools ?
Libra420T said:
TO CLARIFY THIS IS A ROOT ONLY FIXAfter gaining root install given module.
Data is now retained. Even after reboot(s).
No empty slot or waiting.
Issue is TMO variant is showing muli sim.
So props were added to make it like a conversion to single sim....
Yes module works for both models.
Install & enjoy
Extract and pull it apart if interested .
Please give amazing thanks
to @twinnfamous for building module & bringing this data/sim nightmare to an end
Click to expand...
Click to collapse
Hey dear . Update to a12 last version c63 with ota update or local update?
Phoenix47 said:
Will it work on coloros 13 open beta ?
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Yes it does. Beware that you may lose VoLTE, 5G, and WiFi calling though.
Phoenix47 said:
I don't even use any of them.
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What carrier do you have? I had to go back to OOS because no US carrier works right without VoLTE now. Couldn’t make or receive calls unless my phone was on 3G (T-Mobile). Went back to OOS and then switched to my 12 Pro Max. Waiting for the Pixel 7 Pro announcement to decide if I’m going to that or getting a 14 Pro Max and saying goodbye to Android (again - my OnePlus 9 is the first Android I had since 2017 when I switched). All I know is I’m over this device.
dual sim will work?
sim issues solved from Android 13?
I read some xda/reddit posts on this topic. It seems:
- OOS 11 is the only option to stably run kb2005 (oneplus dual sim) firmware on kb2007 (tmobile single sim). And a dual sim card tray can be used so that the second sim works for volte/vowifi (wifi calling).
- MSM Tool is the way to go to flash kb2005 firmware on a kb2007 phone to rebrand as EU version KB05BA, per this thread https://forum.xda-developers.com/t/...m-unlock-or-bootloader-unlock-needed.4188491/ . From there, kb2005 firmware can be installed with Local Update option.
- If OOS12 is installed and rollback is needed then this thread is very helpful https://forum.xda-developers.com/t/downgrade-oneplus-8t-kb2005-from-12-to-11-stable.4424381/
Does this sound about right? Or am I missing something on this issue? Thanks in advance!
Okay the device has arrived. I plan to stay on OOS11 for a while. 1) No real benefit added by OOS12; 2) VoLTE and Wifi Calling on US carriers like T-Mobile have been reported stabler on OOS11.
Below are the steps I took:
1. Use EU MSM tool; follow the instructions here (run MSM tool .exe file with administrator permission; can use adb tool to get into edl mode easily): https://forum.xda-developers.com/t/...m-unlock-or-bootloader-unlock-needed.4188491/
2. Download Oxygen Updater, from the device list, select oneplus 8T;
3. Enable advance option in Oxygen Updater; now kb2005 firmware should pop up, download it, and then follow the instructions about "local update" using this file.
oops this automatically brings me to OOS12.
Trying the OnePlus official rollback apk now...
Okay rollback apk doesn't work and quits when I click any firmware.
These are the correct steps:
0. Use carrier unlock from the setting to unlock T-Mobile carrier lock first.
1. Use EU MSM tool; follow the instructions here (run MSM tool .exe file with administrator permission; can use adb tool to get into edl mode easily): https://forum.xda-developers.com/t/...m-unlock-or-bootloader-unlock-needed.4188491/ note: after reboot I have dual VoWifi working already on KB05BA firmware.
2. Just use system update if it is showing 11.0.13.13.KB05BA.
This sticks to the EU firmware, as dual VoWifi already works on T-Mobile USA.
Hello, could you confirm that dual sim is working by following the steps above? I just received my T-Mobile 8T yesterday and found out it has only one sim slot.
Yes, it was actually just that simple. SIM unlock. MSM tool. And one system update.
You might have to be careful with the last part tho because the latest system update may bring you to OOS12 and dual SIM will break. You might need to search for Oxygen updater and find a way to update to the latest OOS11 firmware. Oh also Global is the best among all firmware versions.
jllll said:
Yes, it was actually just that simple. SIM unlock. MSM tool. And one system update.
You might have to be careful with the last part tho because the latest system update may bring you to OOS12 and dual SIM will break. You might need to search for Oxygen updater and find a way to update to the latest OOS11 firmware. Oh also Global is the best among all firmware versions.
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Click to collapse
Thank you so much
I followed the steps above but for some reason the Oxygen Updater still update my device to OOS12. I managed to downgrade back to OOS 11. I am still waiting for my dual sim tray from Amazon. Just to confirm, the latest OOS is 11.0.13.13.KB05AA right? Also, on the "About phone" page, the model is still KB2007, is this ok?
JerryRich said:
I followed the steps above but for some reason the Oxygen Updater still update my device to OOS12. I managed to downgrade back to OOS 11. I am still waiting for my dual sim tray from Amazon. Just to confirm, the latest OOS is 11.0.13.13.KB05AA right? Also, on the "About phone" page, the model is still KB2007, is this ok?
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Click to collapse
I am on 11.0.13.13.KB05BA EU firmware. On www.oneplus.com the latest stable firmware is 11.0.13.13.KB05AA for global https://www.oneplus.com/global/support/softwareupgrade/details?code=PM1605596915581
My next update notification is for KB2003_11.C.33 which is OOS12.
About phone shows KB2007 for me as well but I have dual VoWifi on T-Mobile.
Waiting for a genius making dual SIM work again on OOS 12...
jllll said:
I am on 11.0.13.13.KB05BA EU firmware. On www.oneplus.com the latest stable firmware is 11.0.13.13.KB05AA for global https://www.oneplus.com/global/support/softwareupgrade/details?code=PM1605596915581
My next update notification is for KB2003_11.C.33 which is OOS12.
About phone shows KB2007 for me as well but I have dual VoWifi on T-Mobile.
Waiting for a genius making dual SIM work again on OOS 12...
Click to expand...
Click to collapse
Don't know anything about dual sim on KB2007 and OOS12, but heard about dual sim on KB2007 on LOS/AOSP. But proceed with caution, as that guide was for OOS11 based LOS/AOSP.
[GUIDE] Enable Dual SIM (dsds) on your T-Mobile 8T (KB2007) with Lineage/AOSP ROM
NOT FOR OOS, If you do this on TMO OOS you will lose connectivity. So Lineage and all other AOSP based ROMs does not enable dual SIM for kebabt due to the T-Mobile modem having a hissy fit. However, you can flash the US/Global modem, retain all...
forum.xda-developers.com
JerryRich said:
Also, on the "About phone" page, the model is still KB2007, is this ok?
Click to expand...
Click to collapse
Yep.
Hello.
So basically, I have a T-Mobile OnePlus 9 (LE2117). I went through that whole ordeal of having that global conversion script brick then phone and then bring it back to life using the India 9 Pro MSM. I tried a bunch of stuff, eventually gave up and contacted OnePlus support to get to a working T-Mobile MSM tool.
When the T-Mobile MSM they used did its thing, it went back to the T-Mobile software, however there are two issues with it:
1. The pink T-Mobile splash screen doesn't show up on boot but instead a black one that just says "android" shows up (see attached image)
2. The software updates button is grayed out and cannot be hit
The original T-Mobile MSM you can find online also works now, but it still results in this same issue.
I ended up using the global conversion MSM on OOS 11 and a custom rom for a few months each, both of which worked perfectly, but this is still an issue that is here after using the T-Mobile MSM again.
Is there any good way of fixing this issue? I do have quite a few of the important partitions backed up if those are necessary.
Thanks!
BGW#10 said:
Hello.
So basically, I have a T-Mobile OnePlus 9 (LE2117). I went through that whole ordeal of having that global conversion script brick then phone and then bring it back to life using the India 9 Pro MSM. I tried a bunch of stuff, eventually gave up and contacted OnePlus support to get to a working T-Mobile MSM tool.
When the T-Mobile MSM they used did its thing, it went back to the T-Mobile software, however there are two issues with it:
1. The pink T-Mobile splash screen doesn't show up on boot but instead a black one that just says "android" shows up (see attached image)
2. The software updates button is grayed out and cannot be hit
The original T-Mobile MSM you can find online also works now, but it still results in this same issue.
I ended up using the global conversion MSM on OOS 11 and a custom rom for a few months each, both of which worked perfectly, but this is still an issue that is here after using the T-Mobile MSM again.
Is there any good way of fixing this issue? I do have quite a few of the important partitions backed up if those are necessary.
Thanks!
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Click to collapse
Can u use op9 to global conversion msm with any problem
rizzmughal said:
Can u use op9 to global conversion msm with any problem
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Click to collapse
If you are talking about the T-Mobile to Global conversion MSM, yes.
BGW#10 said:
If you are talking about the T-Mobile to Global conversion MSM, yes.
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Click to collapse
Did u update to oos12 were there anyproblems u face in that
rizzmughal said:
Did u update to oos12 were there anyproblems u face in that
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The dual sim/no service bug. I am aware of the root fix, but I was looking to get the T-Mobile software working normally again.
BGW#10 said:
The dual sim/no service bug. I am aware of the root fix, but I was looking to get the T-Mobile software working normally again.
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What is the target id for ur device is it india or tmo
rizzmughal said:
What is the target id for ur device is it india or tmo
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Click to collapse
I would say that it is tmo because the T-Mobile msm tools works no problem.
I have a oneplus 9 5g le2119 and this is the live demo model. I tried to using msm but no msm tool exists for this model.
Error is Unsupported target verizon. Can somebody help with this? I can't change anything on this phone.
Sim is also locked and can't be used.
Write me via DM, I will give it for you, you can easily go to Europe or global.
selimo21 said:
Write me via DM, I will give it for you, you can easily go to Europe or global.
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Click to collapse
You are not replying in dm