No Signal / Cellular Radio Power Off

Discussion in 'Xiaomi Mi Note / Mi Note Pro' started by mati69ase, Jun 12, 2017.

  1. mati69ase


    Mar 18, 2016
    Hello people of MIUI EU, I have a problem that I'd like to share with you, the original post was written at the MIUI forum.. :

    Hi, since about 4 or 5 days I've been facing this annoying issue that I'll try to describe as good as I can:
    I was watching the final of the UEFA Champions League and suddenly my phone restarted. I didn't pay much attention because of the match, but, when it finished I noticed that the network was gone. As I live in Argentina, poor signal it's common, but my friend was next to me, full signal & 4G running, so I remembered the rebooting thing and started searching for a solution.
    After hours of readding diferent issues and solutions I went after the easiest one tha was flashing the last SU (I had the MIUI eu 7.0, and a couple of weeks before I'd installed the Magisk. IDK if it's relevant, but the more data I give, the better to find a solution). So, I flashed the last SU and signal came back.

    2 days after that.. I woke up and see my phone has rebooted and, no signal error again. I went for the flashing SU solution again.. Nothing happened and then started to do every single solution i had read on the internet such as:

    * *#*#4636#*#* to try turning on cellular radio, and choosing the bands.. Nothing.
    * Flashing NON.HLOS.bin.
    * Flashing modem from different ROM.
    * Fully wipe of the phone and fastboot flashing different ROMs Stable and Dev.
    * QCN file from another Mi note Pro (2 actually).
    * Flasing modem, modemst1 & modemst2 of another Mi Note Pro.
    * Checking the bands with QXDM.
    * Modifying a qcn file with hex editor and my IMEI number (to be honest, idk if this i did it right).

    What's not normal is that I have IMEI, my phone detects the SIM but simply doesn't detect anny network.

    I really don't know what else to do, and I'm running out of ideas.

    If someone sees there's a lack of info just tell me which one do you need to guess what the problem is.
    MYarsin likes this.
  2. Showman


    Nov 21, 2015
    I would suggest you to flash original recovery and flash_all via fastboot the first ever stable MIUI 6. If it works then try to flash newer relases step by step. This solution helped me in 2015 when I tried to downgrade from 5.1 to 5.0 android and had problems with networks.

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