Mobile data problem on Redmi Note 8T

[peravi]

Hi. For several weeks I have had problems with mobile data on my Redmi Note 8T. I have always had a good 4G connection. I usually try different aosp roms, and after installing some of them, I started to lose 4G data. To recover them I connect and disconnect the airplane mode. But I don't understand why it disconnects. I have flashed the stock rom again with MiFlash, but the problem continues. I don't know if it will be a problem with some partition. I recently followed a tutorial to reset the "persist" partition with the "persistbak" copy, but it didn't fix the problem.

Anyone know what might be happening? I would really appreciate your help.

 

[ReMadza]

Hi.
I don't know if your problem was same as me.
but my mobile networks were lost (both sims, due to changing rom?). I testet two or 3 A10 roms but problem was loyal(!!). but after flashing an A11 (revenge OS) it solved and sims networks got back again.

 

[peravi]

Hi.
I don't know if your problem was same as me.
but my mobile networks were lost (both sims, due to changing rom?). I testet two or 3 A10 roms but problem was loyal(!!). but after flashing an A11 (revenge OS) it solved and sims networks got back again.

Thank you. I think my problem is different. I have not lost the data, I just go from 4g to 3g, although I have good coverage. I recently installed Revenge A11 as well, but the problem continues. Thank you anyway

 

[T.Y.M.SAI]

Thank you. I think my problem is different. I have not lost the data, I just go from 4g to 3g, although I have good coverage. I recently installed Revenge A11 as well, but the problem continues. Thank you anyway

did you use latest firmware ?
flash latest miui 11/12
currently i am on miui12
gingko