I just got a used iPhone but when I put my sim card in it keeps saying no service and the contacts which were saved to my sim card aren't showing up. I have turned it on and off again many times and it still isn't working.
The iPhone used to belong to my dad and then my brother before me and they were on different networks so I don't think that's the problem
Added (1). my sim is virgin, my dads was o2 and my brothers was giff gaff
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