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Unlock Lte bands on Chinese version

Hi, I have the opportunity to buy this wonderful phone, but I didn't notice that I have the Chinese version and the band 4 that is used in Mexico doesn't work, is any way to unlock it?

Daerk_Sun said:
Hi, I have the opportunity to buy this wonderful phone, but I didn't notice that I have the Chinese version and the band 4 that is used in Mexico doesn't work, is any way to unlock it?
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Me too,i would like to use band 4 con Asian version.

Yeah actually I was also looking for unlocking of LTE bands. But someone said that it's not possible.

There is a thread for unlocking bands on OP3 hope that someone will make it available to OP3T
but that's mean that it is possible to make it

Any news on this topic guys?
Sent from my ONEPLUS 3T

Me too

It's not possible. I know that for the OnePlus One... there was a way to do it... but after OnePlus One, there is no way.

hello now I am in China if I buy xiaomi8 today can I change to global firmware?

hi if I buy xiaomi8 today in China can I change china rom to global?

Yes - but only Mi 8.
Mi 9 does Not work

apf95 said:
Yes - but only Mi 8.
Mi 9 does Not work
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Really? Did you try? On mi9?
I just ask company they said mi9 already build in google service just install the google play

Problem ist the LTE Band 20 - i think there are differences in the Chip.
But i dont know for sure

apf95 said:
Problem ist the LTE Band 20 - i think there are differences in the Chip.
But i dont know for sure
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Which model mi9or8?

I have chinese Mi8 with Xiaomi EU ROM (unlocked) and using in Germany with LTE

apf95 said:
Problem ist the LTE Band 20 - i think there are differences in the Chip.
But i dont know for sure
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Mi8 chinese has b20 too, the real problem of this device is carrier aggregation. It aggregates some bands that don't guarantee lte+ in all country

LTE and network capabilities

Hi,
could someone please test this phone with the app Network Signal Guru?
I need to find out if this phone really supports LTE Cat 20. as the manufacturer says. How many CA is supported? Ideally, I would need B1+B3+B7+B20. This should be fine. And also I need to know on which carriers this phone supports 4x4 MIMO and 4x4 MIMO CA.
Thanks

Nubia red magic 3 global version always mostly supported all networks band don't worry. Go and buy

sandeepkhatri said:
Nubia red magic 3 global version always mostly supported all networks band don't worry. Go and buy
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I don't care about bands. I care about network features which should be supported, but there is no information about it.

What do u want where are you from

sandeepkhatri said:
What do u want where are you from
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I need to know if this phone supports CA (carrier aggregation) between band B1+B3+B7+B20. Based on the specification it should do 7CA. I hope it's not the same case as Xiaomi phones, which have the same CPU, but they don't pay fees for network features. So they don't support CA in Europe.
Next thing I need to know if they support 4x4 MIMO on each LTE band. This is also related to it 4x4 MIMO CA. That's the next thing.
And the last thing, if this mobile phone supports 256QAM.
It would be best if all these things were tested in the EU and using the application from the first post.

I have the same question. It seems as though I can't get carrier aggregation on my phone.
Has Nubia disabled this functionality? If anyone can confirm if the phone has it or not, that would be great.

pRo_lama said:
Hi,
could someone please test this phone with the app Network Signal Guru?
I need to find out if this phone really supports LTE Cat 20. as the manufacturer says. How many CA is supported? Ideally, I would need B1+B3+B7+B20. This should be fine. And also I need to know on which carriers this phone supports 4x4 MIMO and 4x4 MIMO CA.
Thanks
Click to expand...
Click to collapse
The phone has 3 different hardware versions: Chinese, NA, and Global. Which one do you have?
---------- Post added at 11:11 PM ---------- Previous post was at 11:04 PM ----------
pRo_lama said:
I need to know if this phone supports CA (carrier aggregation) between band B1+B3+B7+B20. Based on the specification it should do 7CA. I hope it's not the same case as Xiaomi phones, which have the same CPU, but they don't pay fees for network features. So they don't support CA in Europe.
Next thing I need to know if they support 4x4 MIMO on each LTE band. This is also related to it 4x4 MIMO CA. That's the next thing.
And the last thing, if this mobile phone supports 256QAM.
It would be best if all these things were tested in the EU and using the application from the first post.
Click to expand...
Click to collapse
I don't know but this is a 480 US dollar phone. Expect shortcuts.
What I don't understand is why you cannot ask the manufacturer directly.
Also, there's a resident Nubia PR employee here. You could ask him in a DM/PM:
https://forum.xda-developers.com/member.php?u=9092064
Fair warning - He has been great but he's been swarmed by stupid questions from less than intelligent users.

nabbed said:
The phone has 3 different hardware versions: Chinese, NA, and Global. Which one do you have?
---------- Post added at 11:11 PM ---------- Previous post was at 11:04 PM ----------
I don't know but this is a 480 US dollar phone. Expect shortcuts.
What I don't understand is why you cannot ask the manufacturer directly.
Also, there's a resident Nubia PR employee here. You could ask him in a DM/PM:
https://forum.xda-developers.com/member.php?u=9092064
Fair warning - He has been great but he's been swarmed by stupid questions from less than intelligent users.
Click to expand...
Click to collapse
Thanks for the link. I have sent that user a private message to confirm whether or not this phone supports carrier aggregation. I know the Snapdragon 855's modem definitely supports this feature hardware-wise. I fear that Nubia has intentionally disabled this feature as some other Chinese manufacturers have done in the past (Lenovo and Xiaomi come to mind).
I did message Nubia's support on this and they only replied with which LTE bands the phone supports. I already know that information and it doesn't solve my question.
If this phone really does lack LTE-CA, it is a major bummer for me as my older phones had this feature and it allows for very fast speeds with my carrier, Verizon Wireless.

nerdydesi said:
Thanks for the link. I have sent that user a private message to confirm whether or not this phone supports carrier aggregation. I know the Snapdragon 855's modem definitely supports this feature hardware-wise. I fear that Nubia has intentionally disabled this feature as some other Chinese manufacturers have done in the past (Lenovo and Xiaomi come to mind).
I did message Nubia's support on this and they only replied with which LTE bands the phone supports. I already know that information and it doesn't solve my question.
If this phone really does lack LTE-CA, it is a major bummer for me as my older phones had this feature and it allows for very fast speeds with my carrier, Verizon Wireless.
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Did you ever check to see if the original specs supported LTE-CA?

nabbed said:
Did you ever check to see if the original specs supported LTE-CA?
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Click to collapse
The official Red Magic website makes no mention of LTE-CA. But the specs posted by GSMArena state it supports up to 7CA as you can see by the screenshot I posted. Qualcomm's website also confirms this if you look at the specs for the Snapdragon X24 modem this phone has.
The hardware can definitely support it for sure. It just seems that Nubia has disabled it for some reason unless I'm proven otherwise.

nerdydesi said:
The official Red Magic website makes no mention of LTE-CA. But the specs posted by GSMArena state it supports up to 7CA as you can see by the screenshot I posted. Qualcomm's website also confirms this if you look at the specs for the Snapdragon X24 modem this phone has.
The hardware can definitely support it for sure. It just seems that Nubia has disabled it for some reason unless I'm proven otherwise.
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GSMArea is not always trusted source of CAT -category and CA. I hope some get combos directly from device modem.
I have builded own website where i have listed many 4G and 5G devices supported combos. I have example ZTE Axon 10 5G here: https://cacombos.com/device?model=A2020N3 . Here is instructions how to get 4G cacombos support from device: https://mt-tech.fi/en/how-to-get-4g-supported-ca-combinations-from-your-android-phone/ .

Question China variant missing B66 band on T-Mobile

Never purchased a non-US compatible device and had a question:
The China variant seems to have most T-Mobile bands (both do not have B71) as the global variant WITH THE EXCEPTION OF B66. Does anyone know whether this will be an issue?
Any help would be greatly appreciated.

i get my china variant Mi 11 Ultra on Monday, im on T-mobile and i live in NYC. i can report back to you then.

flacogp23 said:
i get my china variant Mi 11 Ultra on Monday, im on T-mobile and i live in NYC. i can report back to you then.
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Lucky you! Yes please let me know how the reception turns out. I don't really care about 5G since it's not that widespread, but wondering how 4G LTE will be like.
If you have any opinions on the China variant as you begin to use it, please post as well! Also considering it since there is a cheaper variant (8G+256GB).

Any updates how CN version working in NY with T-Mobile?
interesting to see speed test on 4G. Is actually supporting one 5G band.

avetny said:
Any updates how CN version working in NY with T-Mobile?
interesting to see speed test on 4G. Is actually supporting one 5G band.
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when i ran speed test i get 10Mbps here in Queens at my house. but the real test for me will be at my job, since i dont get any WiFi there.
I also did a factory reset (a habit i always do) and playstore disappeared, i looked on youtube for easy video to re-install. This is my 1st Xiaomi phone, so im getting use to MIUI. but hardware, much better than my Note 20 Ultra. the display is better and the frame rate i see it faster on mi 11. I plan to flash global ROM, but stuck waiting 168 hours for unlock to go thru. this is only my 2nd day with the mi 11 and i like it already. going out later to take some pics.

Don't buy China version because it doesn't support well Carrier Aggregation combinations used by TMUS so you don't get good speed from network. Also it missing B71 and B66 bands - common in US networks. 5G only works with n41 SA when available theory.
Here is list of supported bands and Carrier Aggregation combinations: https://cacombos.com/device/M2102K1C

olkitu said:
Don't buy China version because it doesn't support well Carrier Aggregation combinations used by TMUS so you don't get good speed from network. Also it missing B71 and B66 bands - common in US networks. 5G only works with n41 SA when available theory.
Here is list of supported bands and Carrier Aggregation combinations: https://cacombos.com/device
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Yea global version is definitely better choice. A specially when is about to be available with B66

flacogp23 said:
when i ran speed test i get 10Mbps here in Queens at my house. but the real test for me will be at my job, since i dont get any WiFi there.
I also did a factory reset (a habit i always do) and playstore disappeared, i looked on youtube for easy video to re-install. This is my 1st Xiaomi phone, so im getting use to MIUI. but hardware, much better than my Note 20 Ultra. the display is better and the frame rate i see it faster on mi 11. I plan to flash global ROM, but stuck waiting 168 hours for unlock to go thru. this is only my 2nd day with the mi 11 and i like it already. going out later to take some pics.
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Disappointed to hear you are only getting 10Mbps in a city like Queens. Do update is on what your down speed is like at work!
Thank you and good luck with flashing to global!

Is there somewhere I can view a map of which T-Mobile bands are used throughout the US?

daonei said:
Disappointed to hear you are only getting 10Mbps in a city like Queens. Do update is on what your down speed is like at work!
Thank you and good luck with flashing to global!
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tested at work...70Mbps! so glad i have wifi at home

I've used Chinese version phones without B66 for years, with t-mobile / google fi. Never had any issue with it. My wife uses an iPhone US version, I have stronger signal than her sometimes.

linnil said:
I've used Chinese version phones without B66 for years, with t-mobile / google fi. Never had any issue with it. My wife uses an iPhone US version, I have stronger signal than her sometimes.
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Do you ever use the phones in rural/sparsely populated areas?

lhubbard0 said:
Do you ever use the phones in rural/sparsely populated areas?
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yes. the coverage in those areas are bad either with the US iphone or Chinese android phones with tmobile, imho. i only travelled to those places so i am not authoritive on this assessment.

flacogp23 said:
tested at work...70Mbps! so glad i have wifi at home
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Wow why the difference? What kind of speeds were you getting with other phones at home? Was it about the same?

My mi11 in China can work 280Mbps by 5G. Although the band is a little less, it is not affected in China

Carrier aggregation

Hi everybody, i bought an s10 snapdragon and im using it in europe, i ve problems with carrier aggregation. I d already known that the snap version doesnt match band20 with the others. The problem is that it doenst aggregate any lte band. Is there a way to modify the carrier aggregation without root? I ve read some guide on this forum but im not sure they work with s10. Thanks

So what version of S10 you have bought? US version do not support example combinations used in Europe.

olkitu said:
So what version of S10 you have bought? US version do not support example combinations used in Europe.
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Yes ive bought us version and i knew that, for example, the aggregations with band 20 doesnt work. But i dont have any aggregation working in lte and i was wondering if i can do something to modify this

Vitto99 said:
Yes ive bought us version and i knew that, for example, the aggregations with band 20 doesnt work. But i dont have any aggregation working in lte and i was wondering if i can do something to modify this
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Nothing you can do - sell and buy European version. Here listed supported combinations: https://cacombos.com/device/SM-G977U

olkitu said:
Nothing you can do - sell and buy European version. Here listed supported combinations: https://cacombos.com/device/SM-G977U
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What about the guide at this link https://forum.xda-developers.com/t/s10-g9730-tgy-hong-kong-variant.3915196/page-7#post-79657119

Vitto99 said:
What about the guide at this link https://forum.xda-developers.com/t/s10-g9730-tgy-hong-kong-variant.3915196/page-7#post-79657119
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Carrier Aggregation combinations are compiled to modem firmware so you can't edit these. To update these need source code of modem firmware and then need sign key to sign firmware otherwise your phone modem will brick. On cacombos.com have listed hardware defined combinations.

Vitto99 said:
Hi everybody, i bought an s10 snapdragon and im using it in europe, i ve problems with carrier aggregation. I d already known that the snap version doesnt match band20 with the others. The problem is that it doenst aggregate any lte band. Is there a way to modify the carrier aggregation without root? I ve read some guide on this forum but im not sure they work with s10. Thanks
Click to expand...
Click to collapse
you ever figure anything out?