The phone lock code is used to protect your mobile phone from unauthorised use. When the phone lock code is activated, it needs to be entered every time you turn on your mobile phone.
What you need to do:
The phone lock code protects the contents of your mobile phone from unauthorised use. If use of phone lock code is activated, it needs to be keyed in when you turn on your mobile phone or when it has been in standby mode.
Find "Touch ID & Passcode"
Press Touch ID & Passcode.
Select one of the following options:
Activate use of phone lock code, go to 2a.
Deactivate use of phone lock code, go to 2b.
2a - Activate use of phone lock code
Press Turn Passcode On.
Key in a phone lock code of your own choice.
Key in the same phone lock code again.
Press Require Passcode.
Press Immediately or the required period.
To allow deletion of all phone data after having keyed in an incorrect phone lock code 10 times in a row:
Press the indicator next to "Erase Data" until the function is activated.
2b - Deactivate use of phone lock code
Key in your phone lock code.
Press Turn Passcode Off and key in your phone lock code.
Return to the Home screen
Press the Home key to end the session and return to the Home screen.