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The PIN protects your SIM from unauthorised use if your phone should get stolen. You can change your PIN to a PIN easier to remember of your choice. To change your PIN, you need to turn on use of PIN.
1. Find "Change SIM PIN1"
Press Security & privacy.
Press Additional settings.
Press Set up SIM card lock.
Press Change SIM PIN1.
2. Change PIN
Key in your current PIN and press OK.
Key in a new four-digit PIN and press OK.
Key in the new PIN again and press OK.
If an incorrect PIN is entered three times in a row, your SIM will be blocked. To unblock your SIM, you'll need to key in your PUK. You can get the PUK by calling customer services on 191 from a Vodafone mobile phone. If you're using a land line, you need to dial 03333 040 191. Please note: If you key in the wrong PUK ten times in a row, your SIM will be blocked permanently. In this case, you need a new SIM from Vodafone.
3. Return to the home screen
Press the Home key to return to the home screen.