26-09-2016 01:57 PM
I recently moved back to Ireland from the UK, where I was using an unlocked iPhone4 with a Giffgaff (O2) sim card. When I put my activated 48 sim into the iPhone, I keep getting the message 'invalid SIM' and 'SIM failure'. I've tried changing APN details, turning on and off the phone, but nothing changes. Can anyone offer advice, please?
26-09-2016 03:25 PM
26-09-2016 10:10 PM
Did that help at all?
27-09-2016 02:09 PM