Nokia 5.1

SELECT YOUR SIM PIN
You can choose which digits to use for the SIM PIN. The SIM PIN can be 4-8 digits.
Tap Settings > Security & Location > SIM card lock.1.
Under the selected SIM card, tap Change SIM PIN.2.
Tip:If you don’t want to protect your SIM with a PIN, switch Lock SIM card to Off, and
type in your current PIN.
Access codes
Learn what the different codes on your phone are for.
PIN OR PIN2
PINs or PIN2s have 4-8 digits.
These codes protect your SIM card against unauthorised use or are required to
access some features. You can set your phone to ask for the PIN when you switch it
on.
If you forget the codes or they aren‘t supplied with your card, contact your network
service provider.
If you enter the code incorrectly 3 times in a row, you'll need to unblock the code
with the PUK or PUK2 code.
PUK OR PUK2 CODES
PUK or PUK2 codes are required to unblock a PIN or PIN2.
If the codes are not supplied with your SIM card, contact your network service
provider.
Nokia 5.1 User Guide
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