Like many other cell phones, Sony Ericsson phones allow you to program a four-to-eight number lock code into the phone, preventing anyone that does not know the lock code from making calls or accessing any of the phone options. You can enable and specify the lock code in the Sony Ericsson menu. Once it is set, you can reset the lock code to a new number by accessing the appropriate menu and entering the old and new lock codes. Tips Warnings Writer Bio

How to Reset Phone Lock Codes for the Sony Ericsson - 9