
*#*#4636#*#* – Shows information about phone and battery.
*#*#7780#*#* – Factory Data Reset
*2767*3855# – Factory Format (All the data will be formatted including the internal memory storage)
*#*#34971539#*#* – Shows Information about the Camera
*#*#7594#*#* – Used to change the “End Call / Power” button action
*#*#273283*255*663282*#*#* – For backing up the media files
*#*#197328640#*#* – Enables the Service Mode
*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* – WLAN test
*#*#232338#*#* – Shows WiFi MAC address
*#*#1472365#*#* – GPS test
*#*#1575#*#* – Another GPS test
*#*#232331#*#* – Bluetooth test
*#*#232337#*# – Shows Bluetooth device address
*#*#8255#*#* – For launching GTalk Service Monitor
*#*#0283#*#* – Packet Loopback Test
*#*#0*#*#* – LCD test
*#*#0673#*#* OR *#*#0289#*#* – Melody test
*#*#0842#*#* – Device test (Vibration test and BackLight test)
*#*#2663#*#* – Touch screen version Test
*#*#2664#*#* – Touch screen test
*#*#0588#*#* – Proximity sensor test
*#*#3264#*#* – RAM version test
Zdroj: http://geekace.com/google-android-os-ha ... tings.html
Trocha povidani k nekterym kodum: http://twitteling.com/2010/05/secret-co ... e-android/