If your Android phone is showing a “No SIM Card Detected” error, you can’t connect to your cellular network. When that happens, you can’t use your phone to make or receive calls, send texts, or ...
If you can't make a call or if you see an error message that your phone's SIM card is not working, there are several ways to troubleshoot the problem. Ther error ...
Android Central on MSN
If your Google Fi says your SIM isn't active, here's what's going on
Google is aware of the issue and working on a fix.
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