This mode also allows you tofactory reset your Android machine.
after you grab highlighted the option you want, push thePowerbutton to select it.
Push and hold thePowerandVolume Upbuttons until the bootloader screen appears.
If you hold the buttons too long, the phone will reboot and load Android normally.
If that happens, go back to step 1.
Use the Volume buttons to selectRecovery Mode.
With Recovery Mode selected, push thePowerbutton.
When you see No command, press and hold thePowerbutton, then tapVolume Up.
Release thePowerbutton, and your phone will launch Recovery Mode.
Release the buttons when you see the Samsung logo.
Push and holdVolume DownandPower.
Depending on the model, you may need to selectReboot to Bootloader, or the bootloader may open automatically.
Your phone will now reboot back into whichever version of Android you have installed.
Entering Android Recovery Mode does not erase everything unless you select Factory reset.