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K20 Pro not compatible with T-Mobile. Which ROM will fix this issue?

I didn't do my homework good enough and found out the uncompatibility (can't use mobile data, only voice/text) after I got the phone. I think I will need to flush the phone with a different ROM.
Does anyone know which ROM I should use, so that the phone will end up working with T-Mobile data network?
Thanks.
David

Are you sure?
I don't have this phone but I've had this issue with Xiaomi phones in the past, it turned out to be the APN settings.
I think it wasn't able to get the APN settings from the network, I found something online about my provider and it gave me 3G after I put it in. Then I found another APN for my provider and I got LTE working too.

k20 pro doesnt have bands 2 and 4
the newly released mi 9t pro (which is same as k20 pro) has bands 2 and 4.
i am not sure if Xiaomi has locked the bands on k20 pro with software or it's a hardware thing. if you can , return the phone

Wolfsburg13 said:
Are you sure?
I don't have this phone but I've had this issue with Xiaomi phones in the past, it turned out to be the APN settings.
I think it wasn't able to get the APN settings from the network, I found something online about my provider and it gave me 3G after I put it in. Then I found another APN for my provider and I got LTE working too.
Click to expand...
Click to collapse
T-Mobile tech person was trying to walk me through to set APN. That didn't help. Eventually he asked for IMEI number and checked compatibility, which came back as only compatible with 2G for phone calls and texts.

Any moment 9T Pro firmware will be released, because the phone was released today so just way for it i think.

Lenks said:
Any moment 9T Pro firmware will be released, because the phone was released today so just way for it i think.
Click to expand...
Click to collapse
does the mi 9t pro firmware unlock the bands on the phone ?

Aimara said:
does the mi 9t pro firmware unlock the bands on the phone ?
Click to expand...
Click to collapse
I put a mi 9t pro ROM, MIUI Global 10.3.3.1 Stable 10.3.3.0 (PFKEUXM) on my K20 pro.
It boots up fine and runs fine, except, I can still not connect T-Mobile beyond 2G. When using a China Mobile SIM card (which connects to AT&T network), the status page shows HSPA,
So this seems to be a bad news, that bands 2 and 4, which are supported by Mi 9T Pro, seem to be hardware locked, that using a Mi 9t pro EU ROM does not unlock them.
Anyone has any other suggestions?
Thanks.

That is correct, hardware bands are locked into the chip and cannot be unlocked. Return the phone or sell it, if it really doesn't support the bands you require.
Btw. in which country are you? T-Mobile operates in many countries and with many different bands. Typically you should get 3G, unless you are in the US I think.

Yes, US. This phone supports Band 5 and I see Band 5 is on the T-Mobile support band list. But further check shows that T-Mobile uses band 5 for extremely limited use.
Oh well. Will look into selling it used.

Pixel 4a 5g Verizon

Question 1. Is the bootloader unlockable on the UW version if purchased from google.com
Question 2. Will the 4a 5g (non UW version) still be fully supported on Verizon. **I don't care about 5g at this point in time
In other words... What I'm really trying to find out is if Verizon will "force" me into buying the UW version and refuse to activate the non UW version

Yes, Verizon's version will have the UW band and they will make you buy that one if you want that feature on it. No the bootloader is LOCKED.
https://www.pcmag.com/opinions/veri...pixel-4a-5g-again-reveals-the-millimeter-wave
My understanding though is that any unlocked pixel will work on Verizon but will not have the above-mentioned 5G UW support. Based on reading on previous devices like the One Plus 6 and higher you will have to take an extra step or 2 to get VZW to certify the device but it will work.
I have said goodbye to Verizon after 15+ years in October. I was convinced that they had the best coverage but I just couldn't continue to pay anymore. I should have switched years ago. I have Google Fi and have ZERO regrets. Not only do I have a bootloader unlocked device, if you act soon you can get the deals mentioned in the other parts of this forum if you want to switch.
*My Shameless plug and referral link to receive $20 Fi credit!

I have the unlocked model working on Verizon. Nothing special needed. Just put in your sim and off you go. I didn’t order the Verizon version because I don’t need that extra 5g band at this point.

I just got Google Fi deal 4a 5g which doesn't have UW. eSIM for my personal Fi, physical for my work Verizon sim, dual standby works wonder. Don't care about 5G anyway.

Question UK Users services

Interested in UK users experiences with getting network features working fully.
Does WiFi calling, volte , visual voicemail, 4G+ and 5G, GPay et al work for you?
What ROM? What carrier?
Did you have to disable carrier checks? Or did it work out the box?
Also non region specific stuff too I guess , android auto experience etc etc.

I'm on a contract with EE.
VOLTE, WiFi calling, 4G+, 5G and Google Pay all working without any issues straight out the box. I don't use Android auto so I can't comment on that I'm afraid. CN ROM currently on MIUI 12.5 stable.

Great stuff. Thanks for the reply.
Where did you buy from ?

mgbosshogg said:
Great stuff. Thanks for the reply.
Where did you buy from ?
Click to expand...
Click to collapse
I bought mine from TradingShenzhen here: https://tradingshenzhen.com/en/mi-1...omi-mi-11-ultra-12gb256gb-ultimate-of-android
I didn't have to pay any import tax or custom fees. You can also buy from Wondamobile which they say won't incur any import charges either: https://www.wondamobile.com/xiaomi-mi-11-ultra-5g-12gb-ram-256gb-dual-sim-unlocked.html

Yeah, I have used Wonda a few times. Going to go with TS this time to see how it goes.
Hopefully sell my old Note 20U soon.

Deleted

I'm now in 12.5.2 EU rom, and on Vodafone UK.
Still no 4G+/CA. 5G does work but nPerf states it's 4G. VoLTE, VoWiFi, GPay all fine.
Be interested to know if anyone gets CA working on Vodafone UK with the Global or EEA rom. May have to wait to see what version is released in the UK.

Yip. I have ordered today from TS.
I have a EE work SIM, but use Sky personality. Will be interesting if all works with them as they are quite restrictive on device support.
I don't get 4G+ CA anywhere locally anyway, but bizarrely get 5G at the end of my harbour pier .
Will have to see if it's worth flashing global ROM next month after the UK release. Everything points to the CN being more than usable after tweaking though.

I was on Chinese stock, now global. Sky and EE work fine on both, I use them too.
Global obviously does have full Google services, not the mini pack that was on the Chinese but for some reason they use Google's phone, contacts and text app, so no native call recording. Global is still on original firmware where before flashing I had 12.5 which was a delight, hopefully 12.5 will hit the Global soon.
I will go Xiaomi EU ROM if and when a twrp is released or the fastboot bricking issue has been well resolved. I used EU version on my 10 ultra and it is a dam good ROM.

Brilliant.
@Sathelp
Does volte and WiFi calling work on SKY on CN ? ( Whilst I wait on bl unlock for Global )
Thanks

Sathelp said:
I was on Chinese stock, now global. Sky and EE work fine on both, I use them too.
Global obviously does have full Google services, not the mini pack that was on the Chinese but for some reason they use Google's phone, contacts and text app, so no native call recording. Global is still on original firmware where before flashing I had 12.5 which was a delight, hopefully 12.5 will hit the Global soon.
I will go Xiaomi EU ROM if and when a twrp is released or the fastboot bricking issue has been well resolved. I used EU version on my 10 ultra and it is a dam good ROM.
Click to expand...
Click to collapse
Quoted you incase you didn't see question above re sky WiFi calling etc.
Thanks again.

I did tested download speeds on chinese version of Mi 11 Ultra and guess what ? I am getting only 3.66 mb/s on GG network that runs on O2 architecture if im not mistaking .
Before i bought the phone i verified all the network bands and it should be compatible with all Uk carriers on 4 and 5G .
May it be some setting or something ? I tried 2 different speed test services .

vendetta17 said:
I did tested download speeds on chinese version of Mi 11 Ultra and guess what ? I am getting only 3.66 mb/s on GG network that runs on O2 architecture if im not mistaking .
Before i bought the phone i verified all the network bands and it should be compatible with all Uk carriers on 4 and 5G .
May it be some setting or something ? I tried 2 different speed test services .
Click to expand...
Click to collapse
Were you getting 4G+ before, and now not, maybe?

Question Modem: Possible to Convert China 512gb to Global 512gb in terms of bands?

Is it a software thing that makes the band selection different between the two variants?
Is it possible to flash Global modem to China version to get the Global bands? or is there a physical difference?
OR
Does anyone think Xiaomi will come out with a 512gb global version in the future?

The different bands are hardware, there's nothing you can do about it.
Also, no, 100% they won't release any global 512gb version in the future.

Years ago there were some Qualcomm tools called QPST Tool and QXDM tool or something like that. I read they were used to "unlock" additional bands... But like I said, that was years ago, so no idea if it would work on the Mi 11 Ultra. Probably not.

jericho246 said:
Years ago there were some Qualcomm tools called QPST Tool and QXDM tool or something like that. I read they were used to "unlock" additional bands... But like I said, that was years ago, so no idea if it would work on the Mi 11 Ultra. Probably not.
Click to expand...
Click to collapse
Even if adding bands would be a thing...how many more does one even need? Basically all bands are there (except 66 which is prolly a us band).

It's cheaper for them to make one phone from a production standpoint than make ones with different bands for every market they plan to sell it in

I am gonna buy a Xiaomi Mi 10 Pro 512gb 12gb ram version, however there's no person ... "I just talked to our technicians, and maximum probable it's going to now not work and if it does then you will ... With the frequency bands as this cellphone is fashioned consistent with the Chinese ... Currently on miui international 12.Zero.3 QJZMIXM I'm in Australia if that matters.
Click to expand...
Click to collapse

Question MI 11 Ultra Chinese's Version QUICK help please

Quick help please
Im trying to buy it here in UK MI 11 Ultra Chinese's Version
What is the difference is it worth it
Can i install global firmware on it
Will i get 5G on it im using UK network
Thank you

https://www.wondamobile.com/mobile/xiaomi-smartphones.html. You pay no import tax with wonda.
You will need to unlock the bootloader to change ROMs to other. That takes 7 days. If you want global, why don't you search more local? Then you won't need to unlock the bootloader?
Yes, 5g works but depending on your network and availability. Check your supplier in your area and check the band's available on the phone for fullness before buying.
I'm in the UK, can't get 5g, none around me but 4g is dam fast. I am using the Xiaomi EU ROM, it's a custom ROM based on the Chinese but fully Google and safteynet supported. Pop over to the Xiaomi EU forums for more info.