Toggle Airplane Mode

Even if you’re sure that Airplane Mode is turned off, it’s still worth toggling it off and back on again to see if that helps.

It’s possible your iPhone might have a bad cellular connection, perhaps to a distant tower or one that’s not working properly. Sometimes your iPhone can be a bit stubborn about holding onto that connection. Turning Airplane Mode on and back off will help your iPhone start searching for the closest and stronger connection, making it easier to make phone calls.

The easiest way to turn on Airplane Mode is via Control Center. If you have an iPhone with Face ID, swipe down from the top right corner of your screen. If you have an iPhone with Touch ID, swipe up from the bottom of your screen.

Then, tap the Airplane Mode button in the top left corner of your screen (the one that looks like an airplane). Wait about 30 seconds, and then turn Airplane Mode off again. Finally, try making a phone call.