O2: PIN of the SIM card change
- Open the phone App on your Smartphone. Classic mobile phones need to be unlocked.
- Enter the following Code: **04*Old*new*New# and call him.
- Replace the placeholder "Alt" with your old PIN, as well as "New" by your new PIN.
- You call the Code then is changed the PIN on the SIM card.
O2-SIM-card: PIN change
