Sony

Codes for the J-Series
*#06# : Displays IMEI number

*#00xx# : Changes language (xx is your country code)

*#000# ... *#0000000# : Resets language to auto-selection

*#7465625# = *#simlock# : Displays SIM lock status

*#7353273# = *#release# : Display firmware version

*#78737322867973738# = *#superfactoryreset# : Resets personal data (remove SIM card first)

*#73287489263373738# = *#securitycodereset# : Resets security code to 0000 (remove SIM card first)

*09*(PIN code)# : Turns PIN code on

#09*(PIN code)# : Turns PIN code off