Contributor
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2 Messages
SIM Invalid on Nokia Lumia 520
I have had this GoPhone for just about a year and tonight I'm getting a "SIM Invalid" error message. I rebooted the phone twice and removed and put the SIM card back in and still receiving the message. Help!!!
kdfederer
ACE - Expert
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13.1K Messages
9 years ago
It is possible that the SIM is corrupt. Contact AT&T for a replacement.
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