If you activate this function, the PIN is always checked when you switch on the phone. Some SIM cards do not allow you to Deactivate the PIN query.

First enter the existing PIN code for the SIM card. The PIN code can only consist of numbers from 0 to 9. The new PIN code has to be entered twice, as a precautionary measure, and is stored on the SIM card. If you change the PIN when the SIM card is in a connected mobile phone with SIM Access Profile, you will have to enter the PIN again on the mobile phone after the Bluetooth connection between the car telephone kit and the mobile phone is terminated. Otherwise you will not be reachable.