1. Windows Central Question's Avatar
    I have a nokia lumia 1020 that is locked to Vodafone. I have a Vodafone sim so no problems with network there, I live in the UK. It happens more than once a day and occurs randomly (both using it and leaving it idle). It comes up with sim card error, invalid sim. Turning the phone on and off sometimes helps but not always.

    Can someone please help as this is quite annoying, thanks.
    04-26-2015 01:21 PM
  2. Dionne Ward's Avatar
    I have the same phone on O2 and has been doing this for about a week now. It was doing this a while ago then stopped, but has now started again...extremely annoying!!! 😡😡

    I love my phone but this is driving me mad!!
    04-28-2015 04:08 PM
  3. hotphil's Avatar
    Speak to the network operator and get them to send you a valid sim
    04-28-2015 04:19 PM

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