SIM card constantly turning off, saying inactive/invalid?

My phone has been saying ‘no sim’, ‘inactive sim’, etc, nearly every hour. My small fix has been restarting my phone or turning on airplane mode for awhile, but I can’t deal with it like this forever.

How do I fix this? I’ve contacted my carrier— turns out I had a SIM lock, but even after I got it unlocked and factory reset my phone, it’s still saying no sim. My iMessage is also saying ‘waiting for activation’, if that matters.

How do I stop it from randomly having problems with my sim?

iPhone 12 mini, iOS 18

Posted on Jan 22, 2025 7:09 PM

Top-ranking reply

MrHoffman

Level 10

149,913 points

Posted on Jan 22, 2025 7:24 PM

Re-seat the SIM, and test again.

Get a replacement SIM from your carrier, or migrate the SIM to eSIM if your iPhone supports eSIM.

Then failing that, contact Apple Support.

What Apple suggests doing: If you see 'invalid SIM' or 'no SIM' on your iPhone or iPad - Apple Support

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SIM card constantly turning off, saying inactive/invalid?

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