Then press and hold the side button until you see the Apple logo.
Wait 30 seconds for your iPhone to turn off. Restarting your iPhone may fix your Airplane Mode. When you put your phone in Airplane Mode, the wireless features (Bluetooth, Wi-Fi, GPS, or cellular) are disabled. When it is off, the icon should disappear. You can also easily turn it off at any time. The Airplane Mode icon will appear when it is turned.