Samsung Galaxy A03s
Android 11.0
1 Turn on your phone
Press and hold On/Off until your phone is turned on.
2 Enter your PIN
If you're asked to key in your PIN, do so 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 Turn off your phone
Press and hold On/Off.
Press Power off.
Press Power off.