No SIM Card?

[Jack_Bikes]

I have a iPhone 5 and a couple if times in the past week I have had a message that says I have no SIM card installed. When I restart the phone it's fine. Any ideas on why I would get this? Should I be concerned?


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[magna1968]

Same thing happened to me.Did it about 3 times in one day rebooted it each time & same thing happened after being ok for awhile.took SIM card out & put back in & no problems since

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[hoben02]

Happenned to me and i ended up going to my carrier for a new sim card