iPhone 17 shows "SIM not supported" after iOS 26.3 update

After updating my iphone 17 to ios 26.3 it suddenly threw the message: Sim not supported. It was working fine before this udpate.

These are the things i have done to fix it:

Airplane mode

hard reset

sim removal and cleaning and then put it back in

reset my network settings, none worked

iPhone 17, iOS 26

Posted on Feb 22, 2026 12:53 AM

Reply
6 replies

iPhone 17 shows "SIM not supported" after iOS 26.3 update

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.