Enabling lte band b7 and 4g+

[shadow2373]

Hi
In my country lte only supports b3 and b7 bands and 4g+ works on b3+b7 carrier aggregation .
as you can see in the links below rn7 pro supports b7 and 4g+ :
c.mi.com/thread-2449929-1-0.html
kimovil.com/en/frequency-checker/Ir/redmi-note-7-pro

redmi note 7 pro supports b7 only in China pack , not Indian . My phone's package was Chinese but it came with bootloader unlocked and global rom was installed on it . my phone only supports b3 currently and I can't get 4g+ . (I checked available bands using network signal guru and some other apps )
I followed some guides and tried changing lte bc config in nv ram using qxdm to add b7 but it already had b7 in nv ram settings . So I thought this might be related to firmware or rom , as I was on global rom , so I flashed stock China rom , but nothing has changed . I'm sure my phone has hardware support for b7 , but I don't know what should I do to unlock it . I'm currently using miui11 global rom .
Please help me guys .
Thanks in advance .

 

[gursewak.10]

did you tried stock china rom with fastboot or recovery?
the phone supports FDD-LTE B1 B2 B3 B4 B5 B7 B8 B20 B28 TDD-LTE B38 B40

 

[Zalext]

Hi,

Short Off Topic question:

You BL is unlocked by the seller,
Did they unbind their account from your mobile?

Thank you.

Redmi Note 7 Pro | Tapatalk

 

[shadow2373]

did you tried stock china rom with fastboot or recovery?
the phone supports FDD-LTE B1 B2 B3 B4 B5 B7 B8 B20 B28 TDD-LTE B38 B40

I flashed stock china rom with fastboot using miflashtool , but only b1 b3 b5 b8 b40 b41 was unlocked on it , just like the global rom .

 

[shadow2373]

Hi,

Short Off Topic question:

You BL is unlocked by the seller,
Did they unbind their account from your mobile?

Thank you.

Redmi Note 7 Pro | Tapatalk

Yes .

 

[Zalext]

Yes .

Thank you.

Redmi Note 7 Pro | Tapatalk

 

[Zalext]

Topics ago read that Carrier aggregation is not supported.

Despite seems obvious, did you play toggleing. Preferred Network?




Redmi Note 7 Pro | Tapatalk

 

[shadow2373]

yes , It's on lte . just 4g+ is not working , because b7 is locked on my phone .

 

[olkitu]

Even device have good single bands support that doesn't mean it have good Carrier Aggregation support. That's why i have made website cacombos.com what list Carrier Aggregation supports and data is based from modem logs.

Could someone send to me modem log from Redmi Note 7 Pro? I don't have any data from this device so i can't verify Carrier Aggregation support. I have here instructions how you could get log file out: https://mt-tech.fi/en/how-to-get-4g...tions-from-your-android-phone/#Xiaomi_devices

Then just send to me https://cacombos.com/contribute so i can add it to my website. I can now guess it support about same combinations as Redmi Note 7: https://cacombos.com/device?model=M1901F7G but without log i can't verify.

 

[mathan7]

CA not support all Mi devices, cheating mi, but you unlocked band via qxdm

 

[olkitu]

CA not support all Mi devices, cheating mi, but you unlocked band via qxdm

Most of Xiaomi devices support CA - i have over 30 device Xiaomi device database in cacombos.com confirmed CA support. Just problem is low and middle-cost devices support only CA used in China like 1+3, 3C, 40C and 41C.

If someone have this Redmi Note 7 Pro device, please send to me modem log file so i can add this device to my site. It's very easy from modem log but i just need that.

 

[hackermssharma]

Most of Xiaomi devices support CA - i have over 30 device Xiaomi device database in cacombos.com confirmed CA support. Just problem is low and middle-cost devices support only CA used in China like 1+3, 3C, 40C and 41C.

If someone have this Redmi Note 7 Pro device, please send to me modem log file so i can add this device to my site. It's very easy from modem log but i just need that.

How to take modem log?

 

[olkitu]

How to take modem log?

I have here instruction: https://mt-tech.fi/en/how-to-get-4g...hone/#Method_for_Qualcomm_Devices_before_2020 . You can send log to https://cacombos.com/contribute .

 

[hackermssharma]

I have here instruction: https://mt-tech.fi/en/how-to-get-4g...hone/#Method_for_Qualcomm_Devices_before_2020 . You can send log to https://cacombos.com/contribute .

Its fqc test and there is no advance option as u mentioned.

 

[olkitu]

Its fqc test and there is no advance option as u mentioned.

In my site have 3 different method for Xiaomi: https://mt-tech.fi/en/how-to-get-4g...tions-from-your-android-phone/#Xiaomi_devices - please try old method if work with your device.