No service in European L09 C432 ROM issue - Huawei Mate 9 Questions & Answers

Hello everyone, i know that here collected the best minds of Huawei custom thing development
So i have a question to you, and i hope that you can help me, i dont know there to search and what to do
Originally i had a Mate 9 with L09 C432 ROM (UK Three mobile), after time i decide to flash custom rom, to get a better battery life, root and another tools
Because my phone is insured i have to bring this to original ROM one day, but.... Now when i am flashing any version of L09 C432 ROM i dont have network access (cannot use mobile data), cannot make calls and messages, but i can receive calls and messages. In row about phone i have MEID 0000000000. In top left corner there should be carrier written - No service, looks like that phone think that he is now 2 sim model
No service
One ROM from L09 which one is working for me is RomAur 1.5
I tried to rebrand to another model, and after back to original, not working, all possible roms - same issue. I dont know which part of ROM responsible for receiving calls and messages, or what i destroyed in my phone
Any idea for this?

Hello.
I'm not a developer or something likewise, I'm just a regular user. I have a mate 9 bought in latin America (Dominican Republic) after a month I rebranded my phone from MHA-L09C25B106 to MHA-L09C432B182. My phone was built with a single SIM and when I installed the ROM from this post. https://youtu.be/8OywEYZ2cbw it also gave me the MEID 00000000000000 but it let me do call and use data, also I noticed that even if the ROM was for MHA-L09 it has two SIM toolkits, one with the name of my carrier and the other with none but the phone was fine. The problem came after I updated to B190. I had the no service massage even though I had my SIM card inside, what I did was while on I took off and back on the SIM card and the service came back on, I restarted and came with the same thing so I took it off and back on again and my service came back. Because I use a case I don't want to be taking it off plus doing the same with the SIM card so I reinstalled back the MHA-L09C432B182 and don't allow the system to update itself.
I recommend for you check your version if it is ...B190 and also do the SIM off and back on solution.
Hope this helps.

Jooosu said:
Hello everyone, i know that here collected the best minds of Huawei custom thing development
So i have a question to you, and i hope that you can help me, i dont know there to search and what to do
Originally i had a Mate 9 with L09 C432 ROM (UK Three mobile), after time i decide to flash custom rom, to get a better battery life, root and another tools
Because my phone is insured i have to bring this to original ROM one day, but.... Now when i am flashing any version of L09 C432 ROM i dont have network access (cannot use mobile data), cannot make calls and messages, but i can receive calls and messages. In row about phone i have MEID 0000000000. In top left corner there should be carrier written - No service, looks like that phone think that he is now 2 sim model
No service
One ROM from L09 which one is working for me is RomAur 1.5
I tried to rebrand to another model, and after back to original, not working, all possible roms - same issue. I dont know which part of ROM responsible for receiving calls and messages, or what i destroyed in my phone
Any idea for this?
Click to expand...
Click to collapse
Did you where able to solve the issue
Sent from my MHA-L09 using Tapatalk

Yep I have to eject and reinsert the SIM. Rebranded from L09C185 to L09C432B190. (SINGLE SIM)
Any fix for this on B194?
Will I have the same issue if I rebrand back to L09C185?

kazprotos said:
Yep I have to eject and reinsert the SIM. Rebranded from L09C185 to L09C432B190. (SINGLE SIM)
Any fix for this on B194?
Will I have the same issue if I rebrand back to L09C185?
Click to expand...
Click to collapse
Nop, I just updated to that version and no hope at all.
Sent from my MHA-L09 using Tapatalk

Yeah I still have to eject SIM and replace it back in after each reboot

install on Rom Aur 1.5 b182 Your problem is solved
Sent from my MHA-L09 using XDA-Developers Legacy app

it's ok whith L29C432, i have the same problem (L09 and MEID 00000)

Related

No SIM card | Emergency calls only

Hi everyone,
I have bought a new Galaxy s6 from France (SFR but Sim-free), I tooked it home to Israel and put my sim card and all worked fine but in the version He havent Hebrew in language so I flashed the stock ROM official of Israel from sammobile.com and all worked excellent.
I was one day with the phone and bad surprise... after some hours, without I do something the phone give me a message "No SIM card | Emergency calls only". if I try to call it give me a message "No registred at network". I try to put another sim, i try to flash it back to stock rom of sfr, i try all wiping option and nothing.
What is the most strange is if pull out the sim tray (with a sim card) it give me a message "SIM card removed. Unable to detect you SIM card. Your device will restart tocheck for your SIM card".and if I pull it in it message me "SIM card added. Restart device to access mobile networks." so I believe the sim tray is ok...
Anyone can help me please?
This looks like you have not activated the region lock. When you buy any S6 or S6 edge it comes region locked. To unlock it you have to make a 5 min phone call using a sim from the region you bought it in. Once the call is made the region lock is removed. It does state this on a sticker on the side of the box of the phone.
But the phone worked perfrect at the start... it's normal?
I cant answer that issue sorry but all samsung phones now carry a region lock and have to be used in their region of purchase first.
i tried anything but the phone dont give any option to put code of unlock anywhere
Hey may be i can help...
Try this...
Step 1. At first you will need to get a foreign SIM card.
Step 2. Now turn off your device and Insert the SIM card.
Step 3. Turn on your device.
Step 4. Tap on the Dial pad and type here the code “ *#197328640#”.
Step 5. Now select these options step by step- “ [1] UMTS >> [1] Debug Screen >>
[8] Phone Control >> [6] Network Lock >> Options [3] Perso SHA256 OFF ”.
Step 6. Go back to your device home screen.
Step 7. Here you should see a “Network Lock” message, now you choose “[4] NW Lock
NV Data INITIALIZE“.
Sent from my A0001 using XDA Free mobile app
You can also bring your unit to local Israeli Samsung store for warranty repair.
The region lock does not require a code to be entered nor can a code be entered. Its automatic. When new you need to make a 5 min phone call with a sim card from the region you bought the phone then it unlocks automatically. For example I bought mine in the UK but am using it while working in saudi. Before leaving the UK I made a 5 minute call with my uk EE sim card. Phone now happily accepts my saudi sim card.
The same problem happened to me, I am Iran
I could not yet solved
One solution to this problem does not have a friend?
is happen to me too, i make the 5 minutes call in the UE. When i came back to argentina the phone read my countrry sim card at first. work well for a month and then happen the same thing. Any possible solution to this problem??
hi so i have same problem i try to change cert file but stay same problem
Same problem with my G920F! Used in the UK fine and then brought to the US with me where it worked fine for 2 weeks and suddenly doing this!
Have even tried using a UK Sim and still doesnt work!
Pleaseeeee someone help!
ploto for gsm said:
hi so i have same problem i try to change cert file but stay same problem
Click to expand...
Click to collapse
Try to unlock button
Or write different CERT
It depends on your use of the BOX
any ideas how to fix it? i have the same problem on my S6 Dual sim. 1 month works without any issues, but then 1st sim card doesn´t work, only the 2nd one
Artman4806 said:
any ideas how to fix it? i have the same problem on my S6 Dual sim. 1 month works without any issues, but then 1st sim card doesn´t work, only the 2nd one
Click to expand...
Click to collapse
Me too, same issue on dual Sim. It just stopped working on the second Sim, only first Sim is working now. I think hardware issue.
Sent from my SM-G920F using Tapatalk
Still no solution to this? I have same issue.
brenner650 said:
Still no solution to this? I have same issue.
Click to expand...
Click to collapse
have u guys tried reflashing firmware using odin???
Sent from my SM-G920I using Tapatalk
Same issue
Cyanandroid said:
have u guys tried reflashing firmware using odin???
Sent from my SM-G920I using Tapatalk
Click to expand...
Click to collapse
I have the same issue as above. The only difference is I still use the phone in Uk (O2 unlocked phone with Ee sim). After flashing another rom then returning to stock (but unbranded stock firmware, not the original O2 one) i lost capacity of giving / receiving calls / texts, some weeks later. Since then i tried flashing several stock roms (O2, Ee and unbranded) but i haclve the same issue. I wiped, advanced wiped with twrp reinstalled roms but same issue. I would appreciate a lot any advice.
---------- Post added at 09:00 PM ---------- Previous post was at 08:55 PM ----------
I forgot to mention: galaxy s6 g920f.
Cyanandroid said:
have u guys tried reflashing firmware using odin???
Sent from my SM-G920I using Tapatalk
Click to expand...
Click to collapse
Several fw, reinitialize through Smart Switch also did not help.

S7 HELP! Phone changed imei, changed the model and cant connect to the network.

Good morning XDA,
I'm in desperate needing help, sorry but English is not my first language.
My brother bought a S7 G930F - Exynos that was GSM locked with one company here in Brazil, so he paid a guy to unlock it.
After getting the phone back I notice that the phone now shows G930FD, when I use *#06# to see the IMEI, shows two number, as if it was Dual SIM and both numbers are different that what is written in the back of the phone and the box and the rom seem to be 6.01 but with a lot of programs pre-installed.
So I downloaded the newest ZTO stock rom from SamMobile and flashed, now the phone is on 7.0 but can't connect to the network and still show the tow differents imei numbers.
Any tips or guidance and how can I Solve this?
Thanks, TggB!
TggB said:
Good morning XDA,
I'm in desperate needing help, sorry but English is not my first language.
My brother bought a S7 G930F - Exynos that was GSM locked with one company here in Brazil, so he paid a guy to unlock it.
After getting the phone back I notice that the phone now shows G930FD, when I use *#06# to see the IMEI, shows two number, as if it was Dual SIM and both numbers are different that what is written in the back of the phone and the box and the rom seem to be 6.01 but with a lot of programs pre-installed.
So I downloaded the newest ZTO stock rom from SamMobile and flashed, now the phone is on 7.0 but can't connect to the network and still show the tow differents imei numbers.
Any tips or guidance and how can I Solve this?
Thanks, TggB!
Click to expand...
Click to collapse
Hi
I would take it back to the guy and have it fix.......
He mess up your EFS partition and who know what else
Anyhow , check this thread
https://forum.xda-developers.com/s7-edge/how-to/guide-how-to-fix-check-drk-imei-issues-t3379516

How To check whats the official version of MATE 9?

Bought phone Mate 9 second hand.
How can I be sure what version is it or if its been rebranded?
About phone says its a MHA-L09 and build is L09C432B182
I tried to upgrade it to newest b193 with method in this post [Guide] Mate 9 Flash Update Package and Rebrand
but after upgrade i noticed I lost MEID just zeros, same with PESN when type: *#06#
I am not sure if those numbers were the same before upgrade or something just went wrong.
Other thing is that phone doesnt recognize sim cards after upgrade, it works fine with b182, even if I do upgrade with normal software upgrade throuh phone it finds b190 and again sim is not recognized.
It made me thinking ,how can I actually know what version of Mate 9 i have? I went to huawei web site to check warranty (http://consumer.huawei.com/in/support/warranty-query/index.htm) for this phone and acording to its serial nr/ imei and it says its a MHA-L09B ?im slightly surprised as i found out L09B is an Australian model? live in UK . my serial nr is UGM0217122003582 can someone advice? also if its L09 so i suppose it should have only 1 sim , then why if i go to mobile network there is an sim 2 network field (grey out) ,is that how it should be?
thx
You have 2 sims cause u rebranded ur phone from single sim l09 to dual sim l29.
Better to rebrand it back to l09 so you can hve ur iemi back and working network.
Read carefully , I have IMEI with all brands , I lost MEID and PESN not IMEI, also never rebranded to any l29 always used l09 that's the point
mixMZ said:
Read carefully , I have IMEI with all brands , I lost MEID and PESN not IMEI, also never rebranded to any l29 always used l09 that's the point
Click to expand...
Click to collapse
Are u sure it was L09 Firmware u used? Because if it shows that u have 2 sim now u used L29 Firmware when u flashed it, if u flash a L09 that is the singel sim version with a L29 Firmware it will show that u have 2 sim slots in the Settings.
Sent from my LON-L29 using XDA Labs
1. bought phone mate 9
2 have no knowledge of its history and if it was rebranded or not.
3. phone info clearly shows MHA - L09 C432B182, IMEI was also there and mach serial number according to huewai warranty checker
4. tried to upgrade many times to newest MHA-09 C432193 but always had some issue with it finaly somehow i did it, phone info was showing MHA - L09 C432B193 IMEI was there but i noticed there is no MEID just zeros
5. confirmed that with dialler: *#06# MEID and PESN have just zeros IMEI is there
6. inserted sim and phone had to noticed its there as had pop up from sim vodafone if i want to use prepay or postpay, after selecting either of two : no service.
7 in settings , mobile network there are 2 sections sim 1 and sim 2 both ,grey out
8 rebranded phone with MHA - L09 C432B186, all went ok but results the same, phone upgraded mobile network still shows sim 1 sim 2 both greyout, no service
9 again flashed phone with MHA - L09 C432B182, straight away phone picked up signal. mobile network still shows sim 1 filled with info and sim 2 greyout.
10.having installed MHA - L09 C432B182 i upgraded software through official way settings ,system upgrade : system found MHA-L09C432B190 proceed with that , as a result system upgraded but again sim 1 sim 2 grey out no service.
Thats why im wondering if there is any way to find out phone original region/brand/version ? how can i know if i got L09 or L29 regardless software it has installed?
Something there is definitely not right if the official phone upgrade screws things up ,there is no service and only firmware that works is 182.
mixMZ said:
1. bought phone mate 9
2 have no knowledge of its history and if it was rebranded or not.
3. phone info clearly shows MHA - L09 C432B182, IMEI was also there and mach serial number according to huewai warranty checker
4. tried to upgrade many times to newest MHA-09 C432193 but always had some issue with it finaly somehow i did it, phone info was showing MHA - L09 C432B193 IMEI was there but i noticed there is no MEID just zeros
5. confirmed that with dialler: *#06# MEID and PESN have just zeros IMEI is there
6. inserted sim and phone had to noticed its there as had pop up from sim vodafone if i want to use prepay or postpay, after selecting either of two : no service.
7 in settings , mobile network there are 2 sections sim 1 and sim 2 both ,grey out
8 rebranded phone with MHA - L09 C432B186, all went ok but results the same, phone upgraded mobile network still shows sim 1 sim 2 both greyout, no service
9 again flashed phone with MHA - L09 C432B182, straight away phone picked up signal. mobile network still shows sim 1 filled with info and sim 2 greyout.
10.having installed MHA - L09 C432B182 i upgraded software through official way settings ,system upgrade : system found MHA-L09C432B190 proceed with that , as a result system upgraded but again sim 1 sim 2 grey out no service.
Thats why im wondering if there is any way to find out phone original region/brand/version ? how can i know if i got L09 or L29 regardless software it has installed?
Something there is definitely not right if the official phone upgrade screws things up ,there is no service and only firmware that works is 182.
Click to expand...
Click to collapse
Can u check Project Menu to see in Veneer Informations if u can find anything there? Dail *#*#2846579#*#* or maby Dc Unlocker/Phoenix can get some info about the phone, and u have HCU-CLIENT.
https://www.dc-unlocker.com/DC-Phoenix-flash-repair-tutorial
http://hcu-client.com
Sent from my LON-L29 using XDA Labs
Seems it was single sim branded phone and the previous owner has flash it to single sim unbranded.
I think l29c636 firmware can fix it. Just flash an approved firmware.

Mate 9- need help with fixing meid.

HI,
Recently rebranded my mate 9 to c432 and back to original C33 official firmware now meid shows 000000000
Is there any way to fix my meid, my sim is not detected and shows NO SERVICE.
Anyway i can fix it, except DCunlocker, Funkyhuawei etc.
any help would be much appreciated.
Shadymind said:
HI,
Recently rebranded my mate 9 to c432 and back to original C33 official firmware now meid shows 000000000
Is there any way to fix my meid, my sim is not detected and shows NO SERVICE.
Anyway i can fix it, except DCunlocker, Funkyhuawei etc.
any help would be much appreciated.
Click to expand...
Click to collapse
Did you use original C33 oeminfo or got from this thread: https://forum.xda-developers.com/mate-9/development/oeminfo-library-t3555353/post70999977
Shadymind said:
HI,
Recently rebranded my mate 9 to c432 and back to original C33 official firmware now meid shows 000000000
Is there any way to fix my meid, my sim is not detected and shows NO SERVICE.
Anyway i can fix it, except DCunlocker, Funkyhuawei etc.
any help would be much appreciated.
Click to expand...
Click to collapse
I am in the same boat. Posted bere my experience a week ago but no reply. I rebranded from C567 to C432 and all work well. I even updated to Oreo. For me is just a cosmetic issues, but I'd still love to fix it.
wmfreak said:
I am in the same boat. Posted bere my experience a week ago but no reply. I rebranded from C567 to C432 and all work well. I even updated to Oreo. For me is just a cosmetic issues, but I'd still love to fix it.[/QUOTE
I don't think it's possible to fix. I have looked into this a lot as I had the same thing happening on my phone and nobody seems to have a fix. When you rebrand a single sim device to a dual SIM ROM it appears to activate the second sim slot which gives the MEID 00000000 in settings and activates dual SIM menu in settings. It also stops the SIM from being read in some ROMs until the SIM is ejected and put back in after a reboot. The second sim reader stays active even if you rebrand back to a single sim ROM. I ultimately had to send my phone off to be repaired and they ended up replacing the mainboard under warranty.
Click to expand...
Click to collapse
Dmn100 said:
wmfreak said:
I am in the same boat. Posted bere my experience a week ago but no reply. I rebranded from C567 to C432 and all work well. I even updated to Oreo. For me is just a cosmetic issues, but I'd still love to fix it.[/QUOTE
I don't think it's possible to fix. I have looked into this a lot as I had the same thing happening on my phone and nobody seems to have a fix. When you rebrand a single sim device to a dual SIM ROM it appears to activate the second sim slot which gives the MEID 00000000 in settings and activates dual SIM menu in settings. It also stops the SIM from being read in some ROMs until the SIM is ejected and put back in after a reboot. The second sim reader stays active even if you rebrand back to a single sim ROM. I ultimately had to send my phone off to be repaired and they ended up replacing the mainboard under warranty.
Click to expand...
Click to collapse
I rebranded a dual sim to a dual sim. Like I said, all works fine, just a cosmetic issue.
Click to expand...
Click to collapse

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

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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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).
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
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
Click to expand...
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
do i need to root to begin with ?

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