Redmi 4 2nd Sim Problem After Flash

[ecomo]

Hello.

After flash MIUI EU sim card in the second slot stopped working. I changed the cards, they are working.

If I put the sim only to the 2nd slot then it works. If there are two cards then the 2nd does not work.

If I enable data transfer on card 2 (both cards in slots) and switch off the 1st card in menu for sec, the two cards work properly. Both cards working only if data transfer is enabled on 2nd sim.

IMEI numbers have not been changed.

I checked several versions of MIUI and it always happens the same. Only on Chinese, stable rom everything works properly.

I bought the phone from Goldway with some kind of junk software, but it worked properly.

Did any of you have a similar problem?

 

[ecomo]

Hi
I found a solution:

Try re-installing the modem as follows:

From the zip file (it is a downloaded rom) extract the file NON-HLOS.bin

Phone in fastboot mode and command:

fastboot flash modem NON-HLOS.bin

Reboot to fastboot mode again and commands:

fastboot erase modemst1

fastboot erase modemst2

fastboot reboot

My Redmi 4 works perfect after that.

 

[vlad_g]

I had the same issues after flashing rom.
I solved them in this way:
I hope you have unlocked bootloader and TWRP recovery installed. If not, you should do it. Then make backup of your efs partition in twrp.
Then download the file https: //drive. google. com/ open?id= 0BzFxTDPkbNXVUDI3RDA4NHZWZEU (Remove blanks in url)
and unzip it into backup folder (smth.like sdcard/TWRP/BACKUPS/xxxxxxx/2017-03-29-11-22-3/) with replacing your efs files. After that restore backup with TWRP and reboot.
If it doesn't work, try to do this way: https: // xiaomifirmware.com/ guides-and-tips/ fix-missing-network-issue-redmi-4/
(Remove blanks in url)