SIEMENS secret code

SIEMENS A35, A36, C25, C35, C45, S25, S35i

To see IMEI
press *#06#

To change menu language:

Press *#0000# + SEND for menus in automatic language (defined by operator)
Press *#0001# + SEND for menus in english
Press *#0032# + SEND for menus in french
Press *#0039# + SEND for menus in italian

To see/edit an entry in the phonebook
press the then # (ex: 10#).

Siemens S40

To see IMEI
press *#06#

To Access the engineering menu
press *#36446337*8378#