no SIM
I'm using a Iphone 4S as Ipod.
It was the old iphone of my little brother and he gave it to me when he upgraded.
I have it since last year (june or july) and since yesterday... in the indicator it said : no SIM or network unavailable.
I've restard the Iphone 4 or 5 times and no changes...
What I can do ?
iPhone 4S, iOS 8.2