A handset lock code problem

Hi,

If you have never used a lock code on the phone then the phone would currently have the factory default lock code.

To get this information please contact the phone manufacturer and they will be able to provide you the same.
Calling Telstra might be another, and possibly quicker, way to get the same information.

All you will need to do is navigate to the phone's security settings and enable the handset lock, choose a password and set the timeout period for the phone to autolock itself.

I hope this helps.