Follow these steps to fix a phone stuck in airplane mode:

1. First, turn off airplane mode by pressing the power button.
   
2. Check to make sure the airplane mode indicator has disappeared.
   
3. If it hasn’t, press airplane mode toggle to turn it off.
   
4. If you still can’t turn off airplane mode, restart your phone.
   
5. After it has restarted, check the airplane mode toggle to make sure it’s off.
   
6. Finally, if you’ve still not been able to turn off airplane mode, contact your phone manufacturer or your wireless provider for technical support.