3 hidden modes in Android smartphones

There are a lot of cool stuffs to learn about Android OS. You can read our previous article about Android hidden secret codes which can be used to enable/disable secret phone settings and to show various interesting and useful information. Also read A-Z of Android terms/glossary so you will be familiar with some terms used in Android.
Today’s article is on 3 hidden modes in the Android smartphones, you know Android is dominating the mobile market so these codes and hidden modes can prove highly beneficial to users that why i am sharing these with you.

3 HIDDEN MODES IN ANDROID SMARTPHONE

1. Fast Boot mode
2. Download mode
3. Recovery mode

DISCLAIMER: This information is designed for experienced users. Please do not try any of following methods if you are not familiar with mobile phones. I am not responsible for the use or misuse of this information. So use it at your own risk.

Fast Boot Mode
This mode is used to flash the phone firmware using commandline tools. Its also used to root android phones and gain access to other hacks to your phone.
NOTE: opening it can void your warranty
To access this mode:
1. Power off your Phone.
2. Press and hold Call and End Call/Power keys.

Download Mode
This mode is also used to flash the phone firmware. Mostly this mode is used by GUI tools and Odin 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.

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.