Restart Iphone. If you backed up your iphone after you remove the passcode restore your data and settings. If you want to save the information on your iphone ipad or ipod make a backup.
To restart earlier models press and hold the sleep wake button. When the power off slider appears onscreen release sleep wake. Force restart iphone 8 or iphone se 2nd generation press and quickly release the volume up button press and quickly release the volume down button then press and hold the side button.
Make sure that your mac or pc is updated.
Press and quickly release the volume up button. When the apple logo appears release the button. Drag the slider to turn off your iphone. Make sure that your mac or pc is updated.
