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Connection problem or invalid IHM code.

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Marcus567 -  
Hi everyone, I've had a Huawei P8 Lite 2017 for days and I can't check my credits or make calls. When I try to make a call, it doesn't go through and displays "connection problem or invalid IHM code."
I need help please.

2 answers

  1.  Papounet17000
    Hi,

    This is simply due to a misconfiguration of your smartphone.

    To solve the problem, just go into mobile data settings, and instead of 4G only, select 4G/3G/2G automatic.
    154
    1. Marcus567 Author
      Thank you papounet17000, I just changed from 4G/3G/2G to 3G/2G because it was already set to 4G/3G/2G, still the same except that it's now gone to emergency calls.
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    2. Papounet17000
      @Marcus567You can try a factory reset of the device.
      Generally, it resolves quite a few issues.
      -6
    3. Marcus567 Author
      It's true as well. Thank you very much % I will try.
      0
    4. Marcus567 Author
      Hello, after resetting it's still the same, the SIM shows up but there's still the same issue "connection problem or invalid IHM code." Are there no other solutions you can suggest?
      1
    5. Papounet17000
      @Marcus567You will need to go see your operator or the store where you bought the smartphone.
      0