New Member


1 Message

Fri, Apr 3, 2020 11:01 PM

Invalid SIM

For the last few days my phone has randomnly stopped working on the cell network and shows "Invalid SIM" on the left upper corner. If I power it off, it resets and works again. But it's happening at least once a day and has been happening for about 5 days. My phone is an iPhone 8. Can anyone help?


Brand User

New Member


119.7K Messages

2 months ago

Hi @seageiger,


Thanks for reaching out! We'd love to assist.


Apple has a helpful article on the Invalid SIM error message, and what you can do to correct this issue. There are about six steps listed on the page. Try them out and see if you are able to fix this issue. Let us know if this helps or not!


Collin, AT&T Community Specialist

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