*#0000# or *#999#

Display software version
—————————————————————————————————————-
*#7780#

Reset all settings, then enter the special code (12345 by default).
—————————————————————————————————————-
*#7370# or *#62209526#

Reset all settings and erase all data, then enter the special code (12345 by default).
—————————————————————————————————————-
*#92702689#

Service Menu
—————————————————————————————————————-
*#746025625#

Shows if the “sim clock stop allowed” mode is supported and activated. This is an energy saving feature.
—————————————————————————————————————-
*#67705646#

erase provider logo
—————————————————————————————————————-
*#7370925538#

erase suitcase (including password)
—————————————————————————————————————-
*#2820#

display Bluetooth device address
—————————————————————————————————————-
*#62209526#

display MAC device address (only for devices with WLAN/WiFi)
—————————————————————————————————————-
##634#

Start diagnostic tool (windows phones)
—————————————————————————————————————-
press # long

turn on/off profile silent
—————————————————————————————————————-
press * long

turn on/off Bluetooth (only E models)