Huawei P30
Turn use of PIN on or off
The PIN protects your SIM from unauthorised use if your phone should get stolen. If use of PIN is turned on, it needs to be keyed in when you turn on your phone.
Press Settings.
Press Security & privacy.
Press More settings.
Press Encryption and credentials.
Press Set up SIM card lock.
Press the indicator next to "Lock SIM card" to turn the function on or off.
Key in your PIN and press OK.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
1. 1. Find "Set up SIM card lock"
2. 2. Turn use of PIN on or off
3. 3. Return to the home screen