The Bosch GSM509 undocumented or hidden features:

Press *#06# to display IMEI *#0000# to set the language automaticaly (Reset to english) *#3370# to set the Enhaced Full Rate #3370# to Reset the phone *#9000# to enter sim lock code *#9003# to enter the network code *#9004# to enter the subset code *#9100# to remove the sim lock permanently (Sim code must be known) *#9101# to remove the corporate lock permanently (after obtaining the network code from provider) *#9102# to remove the provider lock permanently (after obtaining the network code from provider) *#9103# to remove the network lock permanently (after obtaining the network code from provider) *#9104# to remove the subset lock permanently (after obtaining the network code from provider) The following code floats arround on the internet: *#3262255*8378# (= *#dancall*test#). See Netmonitor page.

The GSM 509 rarities or design flaws

NONE at the moment

Other Information

NONE at the moment