iphone 4 call failed

Discussion in 'iPhone' started by BobMali, Jan 16, 2017.

  1. BobMali macrumors newbie

    BobMali

    Joined:
    Jan 16, 2017
    #1
    Hi,

    I'm using an iphone 4, ios 7.1.2

    It was working fine until recently when every time I made a call, it would say "call failed" without appearing to try ringing. I found a fix which was to send *#31# which opens the line and allows it to work. But this works for a few hours - a day at most - and then I have to send that code again.

    Anyone have any ideas what the problem could be and if there's a permanent fix?

    Many thanks

    Simon
     
  2. BobMali thread starter macrumors newbie

    BobMali

    Joined:
    Jan 16, 2017
    #2
    No ideas anyone? This is really frustrating and as I'm based in a remote part of Africa I don't really want to upgrade.
    Thanks.
     
  3. Newtons Apple macrumors P6

    Newtons Apple

    Joined:
    Mar 12, 2014
    Location:
    Jacksonville, Florida

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