Press and hold On/Off until your phone is turned on.
Enter your PIN
If your SIM is locked, press Unlock.
Key in your PIN and press OK.
If the wrong PIN is entered three times in a row, your SIM is blocked. To unblock your SIM, you'll need to key in your PUK. The PUK can be obtained by contacting Customer Service. Please note: If the wrong PUK is entered ten times in a row, your SIM will be blocked permanently. In this case, you need a new SIM from Telstra.