3 Hidden Modes in Android Mobile phones

• Fast Boot mode
• Download mode
• Recovery mode

DISCLAIMER: This information is intended for experienced users. 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 misuse of 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 command line

tools. To access this mode:
Power off your Phone.
Press and hold Call and End Call/Power keys.
2. Download Mode
This mode is also used to flash the phone firmware. Mostly this mode

is used by GUI tools for easier and quicker flashing. To access this

mode:
Power off your phone.
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:
Power off your phone.
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.