on 10-04-2020 12:12
Hi,
having trouble with my sim card. It keeps showing invalid sim. any ideas?
on 10-04-2020 12:22
Usually the sign of a failing sim. You need a new one. Contact O2 Guide: How to find help & contact O2
Veritas Numquam Perit
on 10-04-2020 12:52
on 10-04-2020 12:52
Try taking it out and gently cleaning it too.