Secret Codes for Android Mobile Phones

Simultaneously press and hold the  Power button  (located on the upper-right edge) +  Volume Up button  (located on the left edge near the top) +  Home button  (located at the bottom in the middle) until recovery booting appears in the upper-left part of the screen.  If the Android system recovery screen doesn't display, refer to the  alternate button method . From the Android system recovery screen, select  wipe data/factory reset .  Utilize the volume up/down keys to highlight and the power button to select.   Select  Yes -- delete all user data .  Allow several seconds for the factory data reset to complete. Select  reboot system now .  Allow several minutes for the reboot process to complete.

*#9125#  :   Smiley *#9999#   :  Software Version   *#06#   :  IMEI Number *#0001#  :  Serial Number *#9998*523#   :  LCD Contrast   *#0228# or *#8999*228#    :  Battery Info *#8999*636#   :  Display Storage Capacity  *#8999*778#   :  Display SIM Card Information *#8999*782#  :  Show Date And Alarm Clock *#8999*786#   :  The Display During Warning *#8999*837#   :  Samsung Hardware Version *#0523# - *#8999*523#   :  Display Contrast   *#8999*638#   :  Show Network Information *#9998*246#   :  Battery Status- Memory Capacity *#9998*324# - *#8999*324#    :  Debug Screen   *#9998*842# - *#8999*842#   :  Vibration Test *#9998*289# - *#8999*289#   :  Alarm Beeper - Ringtone Test *#8999*9266#  :  Display Received Channel Number And Received Intensity     *#8999*364#  : Watchdog ON/OFF  *#8999*427#  : WATCHDOG Signal Route Setup *2767*3855#  : Full Reset (Caution every stored data will be deleted.) *2767*2878#  : Custom Reset  *2767*927#  : Wap Reset  *2767*226