3 hidden modes on Android Mobile phones

3 hidden modes in the Android Mobile phones: 1. Fast Boot mode 2. Download mode 3. Recovery mode DISCLAIMER: This information is intended for experienced users. It is not intended for basic users, hackers, or mobile thieves. Please do not try any of following methods if you are not familiar with mobile phones.We'll not be responsible for the use or misuseof this information, including loss of data or hardware damage. So use it at your own risk. 1. Fast Boot Mode This mode is used to flash the phone firmware using commandline tools. To access this mode: 1. Power off your Phone. 2. Press and hold Call and End Call/Power keys. 2. Download Mode This mode is also used to flash thephone firmware. Mostly this mode is used by GUI tools for easier and quicker flashing. To access this mode: 1. Power off your phone. 2. Press and hold Volume Down , OK and End Call/Power keys. 3. Recovery Mode This mode is used for recovery purposes like to reset the phone firmware. To access this mode: 1. Power off your phone. 2. Press and hold Volume Down , Call and End Call/Power keys. Once the alert triangle is shown on screen, press " Menu " key to reset the firmware or press " Home " and " End Call/Power " keys to show recovery menu. NOTE; all phones don't have same way to go into them.like in mine power button+volume up button=fastboot,power button+volume up button(longer)=recovery and power button+volum down button=download mode. For micromax a89 to access recovery mode: switch off ur mobile then press nd hold volume up and power key simultaneously for few seconds then u will be in the recovery mode.