I want to change Xiaomi ROM but I have questions - General Questions and Answers

Hello friends, I'll get to the point:
* The ROM of my phone is carrier modified, it is not a normal global ROM. This phone even has one of the sealed SIM slots. There will be no problem changing it for a global ROM?
* The change can be local or by fastboot?

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Flashing another customization version

Hi! I'm new at flashing Z3-D6603 (the last Sony Phone I had was a Xperia Play) and as I see, there are a lot of new things that you have to look before flashing the phone. I'll go directly to the point, In About Phone, I had the Customization Number 1288-9931_R6C, and I searched for that number in the XperiFirm program, but it doesn't make sense, it says that number is from T-Mobile Poland. I want to flash the Customized US (Because I think that one doesn't have any bloatware apps from operators or could cause problems with my SIM at my country) Is there any risks if I flash another customization number? All I want is get the last stock rom and without root

[Completed] How to change phone number in custom ROM Sprint

Without original Sprint softwares, is it possible to change phone number on a custom ROM?
parvizh5 said:
Without original Sprint softwares, is it possible to change phone number on a custom ROM?
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Hi,
If you tell me what device you have I can try to point you in the right direction.
Thanks anyway, I flashed the stock ROM, and changed the phone number. Then I had to install all over the custom ROM because the twrp backups didn't work for the new phone number, even though the internet worked.

is it possible to get a global SM-G930T rom?

I'm not from the USA but somehow I got a SM-G930T instead of a SM-G930F, the current rom is global somehow but I want in the future(after the warranty is expired and rom is slow after a while) to get a new rom but I see that there is NO global rom for SM-G930T, can I get one or just go replace my device?

Question about VoLTE in another firmware that's different from my country

Hi , my XZP came with an unlocked bootloader, and the firmware is the one for my country, but is a lot bloated, and also I don't like the boot animation, and shut down one .
My question here is this , my firmware supports VoLTE , if I flash another firmware will i lose that option?? If yes, then what archive do I need to avoid in order to flash my device without losing the VoLTE option.
Thanks .
Anybody??
Also if I have my bootloader unlocked, how do i root the phone on Android pie ?? My firmware is
47.2.A.10.107
Well i flashed a german customized firmware,and excluded modem.sin from the flash, everything went smooth and i have the VoLTE settings.
I think that i need to call to my operator in order to have VoLTE calls because when i make one, it shows me HSDPA.
Also when i excluded the modem from the flashing, i was expecting yo have the same modem, but no, just look at the screenshots.
And finally can please anyone point me in the right direction in how to flash this device with this firmware : G8141_Customized DE_1308-5289_47.2.A.10.107_R6C
Thanks.

Questions about flashing global ROMs to a US unlocked Android

Completely new to this, I bought a OnePlus 9 Pro (it said Dual-SIM when I ordered it, then they changed to to single-SIM) and apparently the US version ignores the second SIM slot outright despite being carrier-free. I want to flash a global ROM to it so as to get around this.
1- Does flashing a ROM effect what bands the device recognizes, or is that all hardware based?
2- If I flash a global ROM, will I still get OTA updates and the like?
3- Is there anything that can happen after successfully flashing a new ROM that would require me to re-flash again in the future? Or is it just a one and done type deal?
Thank you in advance

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