If your iPhone displays the No SIM Card Installed error, you won’t be able to connect to your mobile carrier’s network. You won’t be able to use your wireless data over 4G or 5G, and you won’t be able to make or receive calls.
My iPhone says there is no sim card in it! This is the solution.
Whatever the cause and type of error, the solution is pretty simple: all you need to fix it is a paperclip and some software settings. Here’s what to do when your iPhone says “No SIM.”
If your iPhone is giving you the “No SIM” error or you don’t see any bars when you should, try these steps in order to resolve the issue.
Remove the iPhone SIM card and reset it. Since the No SIM card installed issue is often caused by the SIM card becoming slightly loose, the first solution is to try reinserting it and making sure it’s seated properly. After a few seconds (wait a minute at most), the No SIM card installed error should disappear and your normal bars and carrier name should reappear at the top of your iPhone’s screen.
