Oneplus 8 Pro Dual SIM - OnePlus 8 Pro Questions & Answers

Since the EU version of the OnePlus seems to work with Dual SIM.
Can we flash the US version with the EU OxygenOS and be able to get Dual SIM working in the US?

polo2883 said:
Since the EU version of the OnePlus seems to work with Dual SIM.
Can we flash the US version with the EU OxygenOS and be able to get Dual SIM working in the US?
Click to expand...
Click to collapse
Actually, this is what I did. Using US Version (Model: IN2025) and then was flashing with the EU Oxygen OS Version 10.5.4. After the flash, the update to Oxygen OS 10.5.6.IN11BA automatically was retrieved and installed.
Two things are surprising to me:
- I was expecting that after 10.5.6 upgrade, dual SIM should work, when limiting the network to 2G/3G/4G. However it still shows that the dual-sim function is not working.
- I thought that flashing the US device with EU, would also change the model from IN2025.
What am I missing here?
Thanks & Best.

dont think it works like that
you risk bricking it by cross flashing firmware

Nekromantik said:
dont think it works like that
you risk bricking it by cross flashing firmware
Click to expand...
Click to collapse
I was using this post -- and no issues. :angel:
OnePlus chat support told me that only configuration and software is different between the regional devices, hardware is all the same.
However it also didn't solve what I wanted to achieve - dual-SIM and (at best) also European bands - like n78 ... :crying:

Related

Chinese Version

Hey,
I'm thinking about buying the chinese version of the OPT because it's invite-free. My question, apart from fewer LTE bands and no dual-sim support outside of china, is it exactly the same hardware? Meaning, will it for example support the same ROMs that will run on the EU or NA version? Because, since I heard some people having trouble updating their chinese version OPT, I would not want to stick with Oxygen, but install a Custom ROM instead.
Its completely the same (apart LTE / Dual Sim).
A friend bought the chinese version and I flashed successfully oxygen OS. Also the custom kernels and CM 12.1 is no problem.
I'm using one now no problem just that it didn't come with a UK charger but no biggy
I'm also using the Chinese version here in Pakistan without any issue used the LTE without any hassle.
Sent from my ONE A2001 using Tapatalk
Its fine but i had to switch to ee and manually change to band 42

RE : Dual Sim

Hi,
So I was speaking with Samsung regarding the Dual Sim feature on UK Smartphones, and they said.
"The facility is there but the current UK software does not support this at present."
That would indicate that it's the UK firmware software, does anyone have a link to a firmware or can advise which firmware's support the dual sim capabilities.
My current firmware is : MMB29K.G935FXXU1APF2
I'm not sure you got correct advice from Samsung on this occasion. In order for dual sim to work, it needs hardware support & none of the European models officially sold has it.
As for software/firmware, I think firmware is not different for 935F & 935FD. Both are same.
p2kin said:
I'm not sure you got correct advice from Samsung on this occasion. In order for dual sim to work, it needs hardware support & none of the European models officially sold has it.
As for software/firmware, I think firmware is not different for 935F & 935FD. Both are same.
Click to expand...
Click to collapse
But the International firmwares come with the "Sim Manager" built in to support dual sims and the UK firmware doesn't come with that.
Liam213 said:
But the International firmwares come with the "Sim Manager" built in to support dual sims and the UK firmware doesn't come with that.
Click to expand...
Click to collapse
That depends on whether your hardware supports multiple sim or not. Your firmware will automatically enable "sim manager" based on hardware.
Just to confirm you, my build no is exactly same as yours so underlying firmware is same for both of us, but my hardware has dual sim capability, so I see that "sim manager".
Here's a screenshot of my build attached.

[Question] Unlock Huawei P10 Lite, dual SIM

I boughtta Huawei P10 Lite. It's the WAS LX1 model. It was bought from a vendor who has blocked the use of a single SIM card.
From the specs I've found this model support Dual SIM, has a slot available, but the software does not recognize second SIM.
It is possible to unlock this feature to use the phone in Dual SIM?
I think blocking second SIM was made by the vendor through software.
Best regards,
Hey according to the official huwaei website both WAS-LX1A and WAS-LX1 support dual sim.
It's possible to enable the second sim but I don't know how, maybe custom roms
catalin22185 said:
I boughtta Huawei P10 Lite. It's the WAS LX1 model. It was bought from a vendor who has blocked the use of a single SIM card.
From the specs I've found this model support Dual SIM, has a slot available, but the software does not recognize second SIM.
It is possible to unlock this feature to use the phone in Dual SIM?
I think blocking second SIM was made by the vendor through software.
Best regards,
Click to expand...
Click to collapse
The phone is most likely carrier locked, there is no reason to issue special software to block the use of a second SIM card for a phone sold for dual SIM use (and sounds like something you could sue the company for).
Are you trying to insert SIM cards from 2 different carriers? Ask your carrier if your phone is carrier locked and if they are willing to unlock it and report back.
hi,
i am working on it, firstly i rooted the phone with twrp and this is working, but still i dont see the settings for dual sim.
Can anybody help with that ?
thx Karol
karolq said:
hi,
i am working on it, firstly i rooted the phone with twrp and this is working, but still i dont see the settings for dual sim.
Can anybody help with that ?
thx Karol
Click to expand...
Click to collapse
try this go to /hw_oem/prop/local.prop
look for ro.dual.sim.phone=false change it to true and reboot
It won't work, you will have to find a OEMInfo TWRP partition from a dual sim P1 0 lite, or use this alternative : https://forum.xda-developers.com/showpost.php?p=72523572&postcount=4
Orphee said:
It won't work, you will have to find a OEMInfo TWRP partition from a dual sim P1 0 lite, or use this alternative : https://forum.xda-developers.com/showpost.php?p=72523572&postcount=4
Click to expand...
Click to collapse
What does OEM contains?
aburezk said:
What does OEM contains?
Click to expand...
Click to collapse
I guess the needed informations, probably the 2 IMEIs from the backuped partition...
I guess it will replace your original single IMEI...
aburezk said:
try this go to /hw_oem/prop/local.prop
look for ro.dual.sim.phone=false change it to true and reboot
Click to expand...
Click to collapse
i have problems to save the change in the hw_oem in root folder but i found next .prop in:
product/hw_oem/WASL01A/prop local.prop
persist.sys.dualcards=false
i changed it to:
persist.sys.dualcards=true
after that it has changed also in /hw_oem/prop/local.prop
but after reboot still single sim.
could somebody give me the TWRP OEMinfo Partition backup from P10lite dual sim?
karolq said:
could somebody give me the TWRP OEMinfo Partition backup from P10lite dual sim?
Click to expand...
Click to collapse
https://mega.nz/#F!2ksGUJAD!M8k9a86izjGvbuSfZttJxw
Credit stefan
aburezk said:
https://mega.nz/#F!2ksGUJAD!M8k9a86izjGvbuSfZttJxw
Credit stefan
Click to expand...
Click to collapse
thank you! i found it before in this long topic about how to root I am downloading and give you reply here. Thanks!
after oem partition restroring phone dont stand up and goes into recovery mode.
after restoring whole partitions from the link - the same.
any sugestions?
k.
karolq said:
after oem partition restroring phone dont stand up and goes into recovery mode.
after restoring whole partitions from the link - the same.
any sugestions?
k.
Click to expand...
Click to collapse
up
i got some backup from TWRP back (restore) and the phone swich on to EMUI with some funcktional and app bugs.
so it is working but something is still messed up.
could somebody give me full TWRP backup with system and so on that i can restore whole phone? will it work like this?
other option is to dowload firmware but the instalation stops on 5% and as always fail.
so if this could be an option plese can somebody make fresh pure copy of all partitions from WAS Lx1A and upload it.
i tryied one from forum but this is not working for me.
br
K.
I read this post some days ago, when i bought the same device with the same kind of sim "lock".
I contacted the huawei support, asking if it was possible to have the complete firmware because it is not fair buying it expecting it to be dual sim.. and it is not.
Their answer, where in a previous mail they told me that p10 lite german version is not dual sim:
Dear Customer,
thank you for your reply.
Sadly your device is a single-SIM device.
All the devices have the same second hybrid slot for 1 memory-card and 1 SIM-card anyway. But the needed hardware parts are missing. So it is not possible to get this DUAL-SIM feature with an other firmware.
Hopefully this inforamtions are what you've been searching for.
For further questions please do not hesitate to contact us again.
Best regards,
Click to expand...
Click to collapse
P4p3r1n0 said:
I read this post some days ago, when i bought the same device with the same kind of sim "lock".
I contacted the huawei support, asking if it was possible to have the complete firmware because it is not fair buying it expecting it to be dual sim.. and it is not.
Their answer, where in a previous mail they told me that p10 lite german version is not dual sim:
Click to expand...
Click to collapse
Some dual sim phones are not mean't to sold in some countries, if you need a dual sim phone, make sure it has been stated before you buy it, buying a single sim phone and expecting it suport dual sim is not the right way to go. Countries like korea and Japan, although there are more countries, they never sell dual sim phones, as these countries only sells phones through carriers, so phones are normally locked, and does not support dual carrier network.
China has the biggest market for dual sim phones, and Hong Kong has only started selling dual sim phones in the past few years, as many people from Hong Kong are buy dual sim phones from china, probably don't want to lose out on business, so most mid to high end phones and many low end phones now support dual sim.
kms108 said:
Some dual sim phones are not mean't to sold in some countries, if you need a dual sim phone, make sure it has been stated before you buy it, buying a single sim phone and expecting it suport dual sim is not the right way to go.
Click to expand...
Click to collapse
On their website, t-mobile, there was nothing about it being single or dual sim. I found the specs both at Huawei website and gsmarena.
This last one, writes:
SIM Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
But the Huawei website's got plenty of p10 lite, each with both single and dual sim for each product code.
Mine is a WAX-LX1 and is both single and dual.
I did read nothing on t-mobile website, about it working on single or dual sim, you know.. like those T&C where you'd read it ..
I supposed it was dual. Because it is nice to have more than less.
It is not. It is single.
But the funny thing is that I'm not really interested at this, because I own a Zenfone too and this is dual sim (now using as an iPod, android version eheheh).
Still.. If someone managed to "hack" it with another firmware, that would be great!
But, Huawei wrote there are hardware part missing.
I don't really believe it.. And I'm not even skilled to try and flash firmware.
If someone, someday, manages to have the second sim working, I'd love to follow the process and having it unlocked as well. Else, nevermind..
P4p3r1n0 said:
On their website, t-mobile, there was nothing about it being single or dual sim. I found the specs both at Huawei website and gsmarena.
This last one, writes:
SIM Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
But the Huawei website's got plenty of p10 lite, each with both single and dual sim for each product code.
Mine is a WAX-LX1 and is both single and dual.
I did read nothing on t-mobile website, about it working on single or dual sim, you know.. like those T&C where you'd read it ..
I supposed it was dual. Because it is nice to have more than less.
It is not. It is single.
But the funny thing is that I'm not really interested at this, because I own a Zenfone too and this is dual sim (now using as an iPod, android version eheheh).
Still.. If someone managed to "hack" it with another firmware, that would be great!
But, Huawei wrote there are hardware part missing.
I don't really believe it.. And I'm not even skilled to try and flash firmware.
If someone, someday, manages to have the second sim working, I'd love to follow the process and having it unlocked as well. Else, nevermind..
Click to expand...
Click to collapse
Is this T mobile in the US, I think the US is not know to have many dual sim phones, especial from the main brands like Samsung, Sony, LG and Hauwei, and if they are not stated dual sim, it's usually a single sim version, or refer to the model number.
I think reading somewhere, someone has done it with the P10, but haven't heard about the P10 Lite.
kms108 said:
Is this T mobile in the US
Click to expand...
Click to collapse
Germany, or better, Austria. Since there isn't a website for Huawei Austria, and the customer support is the one for Germany.
...At least it is not sim-lock! But I still believe it is firmware-related. I don't think they intentionally removed hardware. It would cost more to produce lots of the same phones with different hardware than flashing them with different firmware.
We're here, simply waiting for the guy with a unlocked P10 Lite dual sim working, who can share its backup..
If the concept is similar as for P9 lite, you guys just need to read oeminfo using Twrp from some dual.sim verzion of device, then make flashable zip file and flesh it throu Twrp. After fleshing the firmware is corupted and just need full stock firmware recovery with compatible version of vendor using dload method. But converting single sim into dual sim in Nougat is more difucult then on MM. On P9 lite we only success to convert it using MM. After upgrading on N its dificilts but not imposible. Just find oeminfo share it and make a try. After unlocking dual sim option the phone still has one Imei but two open sim slots, and its normal. All the best!

XZP VoLTE firmware

Hi Guys,
I'm almost happy user of XPZ. I bought non-branded version G1842 dual. I want to use VoLTE(and WiFiCalling if possible) on my handset. My operator Orange PL supporting VoLTE but only on Iphones and branded firmwares for Android phones.
Sony support/service refuse to flash my phone with Orange firmware - so I would need to do this alone but official Orange firmware is available only for single sim XPZ G8141.
Question - can I seftly flash G8142 with G8141 firmware? Or do you know that maybe VoLTE operator configuration is kept in one of sin files like modem_X-FLASH-ALL-42E5.sin and I could just swap one file in whole firmware folder?
Secondly VoLTE - I send email to operator and they replay that configuration of VoLTE is many settings/parameters inside firmware. Besides *#*#4636#*#* option VoLTE provisioning I didn't see any configuration for this service. The config is so deeply inside firmware? When I switch ON this option in that menu it's not saved and when I enter once again the menu is one again switched off.
What I saw most of the VoLTE arround globe have problem - that they need to use branded firmware. Do you think in the future it would change? As far as I check for Iphone it works on all - it's relevant it's branded or non-branded phone.
best regards,
Piotr
I'm in Sweden and VoLTE got enabled for me when I switched carrier. I didn't do anything but switch SIM. I had a Z5 Premium at the time and now I'm on a XZ Premium and VoLTE is enabled as default.
And standard Nordic Combined firmware, no carrier lock.
Piotr, i think with DS version of device you are out of luck. There is no european provider specific modem configuration(required for volte) available for the dual sim device. I have attached available configurations in the zip file.
To get single sim modem configuration files flashed to device, you need to flash system.sin, but i STRONGLY DO NOT recommend doing that. Potential brick on your way.
Mixing flashing the single sim and dual sim different .sin files is highly experimental.
If you really want VoLTE then i think less headache is if you can find a person who is willing to switch single sim version with you.
You can get any region G8141 and then flash https://xpericheck.com/cda/1308-7002
Phone needs load configuration amss_fsg_maple_orange_poland_volte_vowifi_tar.mbn to get VoLTE and VoWIFI.
Checking current oem.sin file, i can see that when inserting Orange PL sim, then amss_fsg_maple_orange_poland_ims_tar.mbn is actually loaded.
Is the XZ Premium on confirmed VoLTE devices list on Orange Poland webpage?
Hello, any news in this thread? I have the same situation but with XZ1. I have nonbranding dual sim working on T-Mobile PL. They sell XZ1 only single sim, so there is only single SIM firmware from T-Mobile. Someone test flashing single SIM firmware for dual SIM XZ/XZ1 Xperia?
Should be same situation as with xz premium. flash single sim fw via newflasher and you are done. will lose 2nd sim but otherwise should be good.
Please Read different topics to know how other users have done it to xz premium dual sim.
VeixES said:
Should be same situation as with xz premium. flash single sim fw via newflasher and you are done. will lose 2nd sim but otherwise should be good.
Please Read different topics to know how other users have done it to xz premium dual sim.
Click to expand...
Click to collapse
Are dual sim variants of xz1 and xzp installed with the required 4x4mimo hardware antennas?
Just flashed XZ1 DUAL with XZ1 SINGLE firmware. Everything work at this time fine and VoLTE and VoWIFI are working from the start!
rafi.mv6 said:
Just flashed XZ1 DUAL with XZ1 SINGLE firmware. Everything work at this time fine and VoLTE and VoWIFI are working from the start!
Click to expand...
Click to collapse
You flashed tmobile PL firmware?
Stefanos1999 said:
You flashed tmobile PL firmware?
Click to expand...
Click to collapse
I haved CE1 DUAL (G8342) firmware and flashed with XZ1_G8341_8.0_47.1.A.2.281_T-Mobile
If someone want, I can send screenshot via PM with firmware version on the phone
rafi.mv6 said:
I haved CE1 DUAL (G8342) firmware and flashed with XZ1_G8341_8.0_47.1.A.2.281_T-Mobile
If someone want, I can send screenshot via PM with firmware version on the phone
Click to expand...
Click to collapse
All functions with single sim firmware work properly?
Phone now reports as g8341 (singles sim) to the mobile carrier?
What does now show in the model number of your device menu?
Stefanos1999 said:
All functions with single sim firmware work properly?
Phone now reports as g8341 (singles sim) to the mobile carrier?
Click to expand...
Click to collapse
I send you PM with screenshot. All functions work well from 8 hours. NFC, VoLTE, VoWIFI, caliing, messaging, LTE, 3G etc, no problem with anything at this moment.
In system information stay now G8341, and naturally i lost second SIM in menu.
rafi.mv6 said:
I send you PM with screenshot. All functions work well from 8 hours. NFC, VoLTE, VoWIFI, caliing, messaging, LTE, 3G etc, no problem with anything at this moment.
In system information stay now G8341, and naturally i lost second SIM in menu.
Click to expand...
Click to collapse
Great! Dualism is sold cheaper than singlesim
Stefanos1999 said:
Great! Dualism is sold cheaper than singlesim
Click to expand...
Click to collapse
Why dual sim are sold cheaper then singlesim? Which country?
I bought XZP in presale and price for non-brand and brand at telcos was the same. For me I was thinking it's benefit because I get dual sim and "clean" FW.
I suppose that Sony (and also Samsung) don't care about this....I hope that carrier services app in android recently added by Google would be the way to update settings for operators for all headsets. Like apple does. That would solve that configuration....
Only when small file missing and and lot of issues with VoLTE and VoWiFi.
lancewicz said:
Why dual sim are sold cheaper then singlesim? Which country?
I bought XZP in presale and price for non-brand and brand at telcos was the same. For me I was thinking it's benefit because I get dual sim and "clean" FW.
I suppose that Sony (and also Samsung) don't care about this....I hope that carrier services app in android recently added by Google would be the way to update settings for operators for all headsets. Like apple does. That would solve that configuration....
Only when small file missing and and lot of issues with VoLTE and VoWiFi.
Click to expand...
Click to collapse
Maybe single and dual sim are exactly the same HW? and when you load DS FW into SS version you will get DS? anyway 2sim share slot with SD ...maybe Sony simply manufacturing process?
VeixES said:
Piotr, i think with DS version of device you are out of luck. There is no european provider specific modem configuration(required for volte) available for the dual sim device. I have attached available configurations in the zip file.
To get single sim modem configuration files flashed to device, you need to flash system.sin, but i STRONGLY DO NOT recommend doing that. Potential brick on your way.
Mixing flashing the single sim and dual sim different .sin files is highly experimental.
If you really want VoLTE then i think less headache is if you can find a person who is willing to switch single sim version with you.
You can get any region G8141 and then flash https://xpericheck.com/cda/1308-7002
Phone needs load configuration amss_fsg_maple_orange_poland_volte_vowifi_tar.mbn to get VoLTE and VoWIFI.
Checking current oem.sin file, i can see that when inserting Orange PL sim, then amss_fsg_maple_orange_poland_ims_tar.mbn is actually loaded.
Is the XZ Premium on confirmed VoLTE devices list on Orange Poland webpage?
Click to expand...
Click to collapse
To confirm files like amss_fsg_maple_orange_poland_volte_vowifi_tar.mbn are kept in which file? oem_X-FLASH-ALL-42E5.sin or modem_X-FLASH-ALL-42E5.sin ?
This file are modem configuration so it should be more in modem.sin but you mention that you check oem.sin for that maple config?
Is 100% configuration of VoLTE are kept in amss_fsg_maple_orange_poland_volte_vowifi_tar.mbn ?
In 20 minutes I would also try to flash XZP like rav.6 with XZ1 to check that solution. And let all know.
br,
Piotr
oem.sin only includes instructions which configuration(.mbn) to load.
all configuration are universally available in system.sin
lancewicz said:
To confirm files like amss_fsg_maple_orange_poland_volte_vowifi_tar.mbn are kept in which file? oem_X-FLASH-ALL-42E5.sin or modem_X-FLASH-ALL-42E5.sin ?
This file are modem configuration so it should be more in modem.sin but you mention that you check oem.sin for that maple config?
Is 100% configuration of VoLTE are kept in amss_fsg_maple_orange_poland_volte_vowifi_tar.mbn ?
In 20 minutes I would also try to flash XZP like rav.6 with XZ1 to check that solution. And let all know.
br,
Piotr
Click to expand...
Click to collapse
I can confirm. Solution by rav.6 is working also on XZP with Orange firmware Poland.
I see now options for VoLTE and VoWiFi and VoLTE are enable but not working
I don't know why
lancewicz said:
I can confirm. Solution by rav.6 is working also on XZP with Orange firmware Poland.
I see now options for VoLTE and VoWiFi and VoLTE are enable but not working
I don't know why
Click to expand...
Click to collapse
In T-Mobile I have activated VoLTE and VoWIFI by sending message to T-Mobile. I don't know how it looks in Orange, but i think you must activate it first.
VeixES said:
oem.sin only includes instructions which configuration(.mbn) to load.
all configuration are universally available in system.sin
Click to expand...
Click to collapse
So what is in modem_X-FLASH-ALL-42E5.sin ?
lancewicz said:
So what is in modem_X-FLASH-ALL-42E5.sin ?
Click to expand...
Click to collapse
Generic modem/radio needed files, which are needed for the modem to work. Identical in every region firmware.

VoLTE in the US on the International version (McLaren) (T-Mobile)

I was wondering if VoLTE works on the international version of the McLaren edition in the US. I need the dual SIM model and as far as I'm aware (I asked an associate, actually), the T-Mobile version does not have a second SIM slot.
klaudius71 said:
I was wondering if VoLTE works on the international version of the McLaren edition in the US. I need the dual SIM model and as far as I'm aware (I asked an associate, actually), the T-Mobile version does not have a second SIM slot.
Click to expand...
Click to collapse
Theoretically, if it's anything like the 6t all you need is a oem dual SIM tray off eBay
seniorstew said:
Theoretically, if it's anything like the 6t all you need is a oem dual SIM tray off eBay
Click to expand...
Click to collapse
There's a bit of process getting that to work, assuming there really is a hidden second SIM slot. Considering how new the phone is, I'd rather not risk bricking the phone trying to change the ROM to get the option of a second SIM slot to appear.
Thanks for the reply, though.
You can use a 2nd sim tray once you root & flash international firmware but the IMEI will be the same on both.
Purest said:
You can use a 2nd sim tray once you root & flash international firmware but the IMEI will be the same on both.
Click to expand...
Click to collapse
Not necessarily, on the 6T after flashing the international rom i noticed a second IMEI
seniorstew said:
Not necessarily, on the 6T after flashing the international rom i noticed a second IMEI
Click to expand...
Click to collapse
When I unlocked & rooted the 7 pro TMO version both IMEIs were the same. I'm assuming the same with 7t McLaren. But I'll know soon enough, I've requested unlock.

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