Cell Phone Secret Codes: BenQ-Siemens

Software version:
*#06#
to see more info, press softkey again

English menu:
*#0001#

Deutsch menu:
*#0049#

Secret Code:
*#0606# remove sim card before

Unlock Sim:
*#0003*(secret code)#

Bonus Screen:
*12022243121

Factory settings: Type *#9999# to reset factory settings.