Develop Bugs

Unlock lte bands note4 910p

Hello!
How to unlock lte bands in our phone NOTE 4 sm-g910P
I used custom kernel and firmware
in qxdm i introduced
in 6828 589918
in 6829 589918
but still dose not work frequency lte 7 and 20 which working in my country
Help please!!!

please clarify excalty what bands your not able to use? 800,1.9, & 2.5 is what your phone will have access to

greenfin2311 said:
Hello!
How to unlock lte bands in our phone NOTE 4 sm-g910P
I used custom kernel and firmware
in qxdm i introduced
in 6828 589918
in 6829 589918
but still dose not work frequency lte 7 and 20 which working in my country
Help please!!!
Click to expand...
Click to collapse
were you able to make it work?

LTE Band 2 [2(1900)] unlock for OnePlus3

Hi Team,
I am using OP3 Indian model and using T-Mobile network. For enabling LTE in my phone, we need to unlock Band 2(1900). Could you please let me know how can we unlock it?

john.akash said:
Hi Team,
I am using OP3 Indian model and using T-Mobile network. For enabling LTE in my phone, we need to unlock Band 2(1900). Could you please let me know how can we unlock it?
Click to expand...
Click to collapse
Take a look here:
https://forum.xda-developers.com/oneplus-3/how-to/guide-unlock-additional-lte-bands-t3519563

jeffrey268 said:
Take a look here:
https://forum.xda-developers.com/oneplus-3/how-to/guide-unlock-additional-lte-bands-t3519563
Click to expand...
Click to collapse
Hi @jeffrey268
unfortunately the steps showing unlocking of 3,4,12,17,30,5,8 & 20 . I would like to unlock band 2 of OP3 (Indian Version)

Reply
jeffrey268 said:
Take a look here:
https://forum.xda-developers.com/oneplus-3/how-to/guide-unlock-additional-lte-bands-t3519563
Click to expand...
Click to collapse
Hi @jeffrey268
unfortunately the steps showing unlocking of 3,4,12,17,30,5,8 & 20 . I would like to unlock band 2 of OP3 (Indian Version)

john.akash said:
Hi @jeffrey268
unfortunately the steps showing unlocking of 3,4,12,17,30,5,8 & 20 . I would like to unlock band 2 of OP3 (Indian Version)
Click to expand...
Click to collapse
According to the TMobile website. Band 4 should also work
https://support.t-mobile.com/docs/DOC-4988

Carrier Aggregation Band Combinations

Hi , Where can i find the Carrier Aggregation Band Combinations , for the Redmi Note 8 Pro Global Model ?
For exemple B3+B7+B28 or B1+B7 ....
I know it's 3CA , but there's no info about Band Combinations , inter-band , intra-band ...
About this Carrier Aggregation , is there a difference between global rom and EU rom ?
I just found this : LTE FDD: B1/B2/B3/B4/B5/B7/B8/B20/B28
LTE TDD: B38/B40
but no info on CA .
With Engeneer code *#*#3646633#*#* , i can see bands , but no Carrier Aggregation Band Combinations .

I searched everywhere , but I did not find anything concerning the Carrier Aggregation Band Combinations .
I just found an option to activate CA .

Tengo el mismo inconveniente... B7+B28=4G+ (Chile)
patlemia13 said:
I searched everywhere , but I did not find anything concerning the Carrier Aggregation Band Combinations .
I just found an option to activate CA .
Click to expand...
Click to collapse

Use netmonster app and see yourself which band currently available for in your area

ScarletVeil said:
Use netmonster app and see yourself which band currently available for in your area
Click to expand...
Click to collapse
After many tests, it is obvious that some applications like Netmonster are not always reliable.
The best way to check for the presence of any aggregation is to check with the code *#*#4636#*#*
You have to enable developer mode to use the code: Go to "Settings", "About phone", and click 7 times on "MIUI version" .

Hi
I think we can see carrier Aggregation Band Combinations available on Qualcomm with QPST Flash Tools , QxDM Professional , LTE Band Calculator ...
Is it possible to find the carrier Aggregation Band Combinations available on RN8 Pro Mediatek with Maui Meta , EFT dongle , SP Tool MTK + FlashROM ... ?
Thank you

I have build CA Combo databases, but i don't have Xiaomi Redmi 8 Pro combos. I think closest i have Redmi Note 8 https://cacombos.com/device?model=M1908C3JG or Redmi Note 8T: https://cacombos.com/device?model=M1908C3XG
You can collect these from your device. I have instruction for that: https://mt-tech.fi/en/how-to-get-4g-supported-ca-combinations-from-your-android-phone/ (Check Xiaomi section) Can you then send logs to [email protected] (with your phone model number and provider name) so i can parse these and update combos to my site? If you also have any other device, you can try get CA combos out so we can build together better database.
There is also another database https://smartphonecombo.it/ but there neither have Redmi 8 Pro.

I think RN 8 Pro supports only B1+B3... I have problem with that because it is not enabled B3+B20 in this device. With RN 8T and Mi 9T Pro everything works fine...
With RN 8 Pro (EEA) I don't have nowhere 4G+ (B3+B20). I noticed in very few location that appears for a second 4G+ (B3 1800+).
If I disable B20 in Engineering mode, I get for a short 4G+ (1800 or 1800+1800 or 1800+2100 or 1800+1800+2100). If I disable B3 I get only 4G (but shows 800+1800 or 800+2100 or 1800+1800 or 800+1800+1800 or 800+1800+2100 or 800+1800+1800+2100). So definetely is some problem/ROM bug with B3+B20 in my case.

You are right - it support 1+3 and Intra-CA. I just got device on my hand and i can confirm these bands and combinations are supported: https://cacombos.com/device?model=M1906G7G

I also noticed problem with aggregation on B3+B20. My network provider recently added B1 in my location so aggregation on B1+B3 started to work, bot not at all 3 carriers like in other device. The same problem I had with other Chinese phone, but is was dedicated for Chinese market. I am surprised by such a savings policy in a not the cheapest model.

Question about carrier aggregation, is it possible to copy the LTE NVRAM configuration files from a phone with 4G+ enabled and replace them to another phone with the same chipset that has it's CA disabled using modem odem meta, I have been looking at this files but don't know where to start

Redmi Note 8/T 4G+

Hello, does anyone who bought this phone knows if and what bands can the modem aggregate? i am thinking of buying one (redmi Note 8 or 8T depending on the price i can get) and i can't find what bands can the phone aggregate or if it even supports carrier aggregatiuon.

Yup, note 8 locked CA
Unlock Manual Use QPST and Qxdm to unlock CA

DxD1401 said:
Yup, note 8 locked CA
Unlock Manual Use QPST and Qxdm to unlock CA
Click to expand...
Click to collapse
Hey
I'm facing an issue with QXDM
I wanted to enable 700MHz (B28) band as well as CA.
I bought the international variant of this phone, which claimed it had those bands and CA.
This is a dual sim with an additional SD card slot (so it has a total of 3 slots).
I'm trying to enable this band by editing the corresponding values with the one I generated with an app, but it didn't work, I can't get thoses to work.
Do you have any *working* tutorial for RN8, with Dual Sim card slot ?
Regards,
busybox

Unlock BAND 20 LTE

Hello folks, i need your help to unlock the band 20 of redmi K30 5G. Currently i have Chinese rom installed .
Is a way to unlock the band 20 ? I saw new Xiaomi MI 10, if you change the rom will enable the band 20 . ( in that case is a software limitation)
In our case ?
Thank you !

Nobody can help me ?

Have you tried this method from xda /crossdevice-dev/sony/thread-progress-please-leave-im-updating-t2871269

casimir120 said:
Have you tried this method from xda /crossdevice-dev/sony/thread-progress-please-leave-im-updating-t2871269
Click to expand...
Click to collapse
i dident tried . i dont think to work, is an old version of snapdragon

Let us know if you're making progress... Trying the same thing with a K30 pro.

Any update? Id love to own this phone but need band 20 here in switzerland. Its the only one deactivated that i would need

People tried to unlock bands at the poco F1, but, there was no success, And people tried a lot

I found the possible files causing the restrictions on LTE and 5G bands, but I have no idea how to modify them to unlock bands.
In the policyman folder, the files:
- china_msim_restrictions.xml
- disable_nsa_mmwave_bands.xml
- lte_feature_restrictions.xml
regards
Excuse my writing (I am using Google Translate)

Arielp211 said:
I found the possible files causing the restrictions on LTE and 5G bands, but I have no idea how to modify them to unlock bands.
In the policyman folder, the files:
- china_msim_restrictions.xml
- disable_nsa_mmwave_bands.xml
- lte_feature_restrictions.xml
regards
Excuse my writing (I am using Google Translate)
Click to expand...
Click to collapse
These files doesn't unlock B20 - this is hardware limitation. Bands are configured to nvitems but on 5G phones many things changed.
But could you please share to me your modem log file so i can list all hardware supported 4G bands to my cacombos.com website? I have here instruction how to get log file: https://mt-tech.fi/en/how-to-get-4g...phone/#Method_for_Qualcomm_Devices_after_2020 and you can send it to: https://cacombos.com/contribute . This help me understand what bands & combinations this device support.

costi90 said:
Hello folks, i need your help to unlock the band 20 of redmi K30 5G. Currently i have Chinese rom installed .
Is a way to unlock the band 20 ? I saw new Xiaomi MI 10, if you change the rom will enable the band 20 . ( in that case is a software limitation)
In our case ?
Thank you !
Click to expand...
Click to collapse
If you change any ROMs from global to China and vice versa won't unlock the bands. This is locked down with hardware, not software. Older Qualcomm devices could unlock bands with Qualcomm tools/programs. This isn't the case with newer models.