*#06# : Display the IMEI (International Mobile Equipment Identity)
*#0000# : Set the language automaticaly (Reset to English)
*#3370# : Set the Enhaced Full Rate
#3370# : Reset the phone
*#9000# : Enter SIM lock code
*#9001# : Enter the corporate code (Bosch 908)
*#9002# : Enter the provider code (Bosch 908)
*#9003# : Enter the network code
*#9004# : Enter the subset code
*#9100# : Remove the sim lock permanently
*#9101# : Remove the corporate lock permanently
*#9102# : Remove the provider lock permanently
*#9103# : Remove the network lock permanently
*#9104# : Remove the subset lock permanently

*#3262255*8378# (*#DANCALL*TEST#) and you will get a hidden 10th menu.

10. Engineering
10.1 MS Info
10.1.1 On
10.1.2 Off
10.2 Software Details
10.2.1 Software Version
10.2.2 EEPROM Version
10.2 Test / Production Details
10.3.1 Hardware Data
10.3.2 Production Data
10.3.3 Service Data
10.3.4 Mechanical Data