To unlock a Sony device:
- Insert a non-Bell SIM card into the device and turn it on.
- The message “SIM Network unlock PIN” will appear. Enter the 16-digit network lock code and press Unlock.
- The message “Network unlocked” will appear once the device has been unlocked.
Important note: you can attempt to unlock the device up to 10 times. After 10 unsuccessful attempts, the device will be permanently locked to the Bell network.