Sony T200c User Manual

You can protect your phone and subscription from 
unauthorized use in several ways.

Locking the SIM card
The SIM card lock protects your subscription, but not 
your phone itself, from unauthorized use. If the SIM 
card lock is on, you have to enter your PIN every 
time you turn on your phone. If you enter your PIN 
incorrectly three times in a row, your SIM card is 
blocked. You need the PUK (Personal Unblocking 
Key) which is supplied by your network operator to 
unblock it.

1. PIN blocked appears.
2. Enter your PUK (or PUK2) and press 

.

3. Enter a new four-to-eight-digit PIN (or PIN2) and 

press 

.

4. Re-enter the new PIN (or PIN2) to confirm and press 

.

Note: If you enter the wrong PUK ten times in a row, 
your card is permanently blocked. If this happens, 
you should contact your network operator.

1. Scroll to Settings, 

, Locks, 

, SIM lock, 

, 

Change PIN, 

.

2. Enter your old PIN and press 

.

3. Enter your new PIN and press 

.

4. Re-enter your new PIN to confirm and press 

.

1. Scroll to Settings, 

, Locks, 

, SIM lock, 

, 

Protection, 

.

2. Select On or Off, enter your PIN and press 

. 

Locking the phone
The phone lock protects the phone against 
unauthorized use if it is stolen and the SIM card is 
exchanged. You can change the phone lock code 
(0000) to any four-to-eight digit code.