SONY ERICSSON

Secret codes
Secret menu / Software version: >*<<*<*Reset Theme <0000>
Serial Number / IMEI: *#06#
Network Information <**
Shortcut to sim numbers: On main menu type a number and press #
Programming Checks: >*<<*<*> or >*<<*<*>
Phone Test: 904059 + > (to exit 3 + <)
Opening phone without a SIM card: **04*0000*0000*0000# followed by on 'Wrong Pin' number