KODE RAHASIA OS ANDROID PADA HP SAMSUNG GALAXY

*#*#4636#*#* - Phone Information
    *2767*3855# - Hard Reset
    *#*#7780#*#* - Factory Reset
    *#*#7594#*#* - Change End Call/Power Option
    *#*#197328640#*#* - Service Mode
    *#*#273283*255*663282*#*#* - File Copy Screen (Backup Media Files)
    *#*#526#*#* - WLAN Test
    *#*#232338#*#* - Shows WiFi MAC address
    *#*#1472365#*#* - GPS Test
    *#*#1575#*#* - Another GPS test
    *#*#232331#*#* - Bluetooth test
    *#*#232337#*# - Shows Bluetooth device address
    *#*#8255#*#* - GTalk Service Monitor


TEST MODE CODE:

    *#*#0283#*#* - Packet Loopback
    *#*#0*#*#* - LCD test
    *#*#0673#*#* - Melody test
    *#*#0842#*#* - Device test (Vibration test and BackLight test)
    *#*#2663#*#* - Touch screen version
    *#*#2664#*#* - Touch screen test
    *#*#0588#*#* - Proximity sensor test
    *#*#3264#*#* - RAM version

Samsung GT S8530 Wave II
Samsung Galaxy Spica I570
Samsung Galaxy Mini S5570