Symphony Xplorer W21_3g Android 4.4.2 KitKat Official Flash file

Press Vol Up and Power Key

Press Power Key When Showing Android Logo

Select wipe data/factory reset Using Volume Down Key

Enter In data/factory reset Using Volume Up Key

Select Yes -- delete all user data Using Volume Down Key

Enter Yes -- delete all user data Using Volume Up Key

Wait 1 Minute For Reset Wipe Data

Select reboot system now Using Volume Up

You Have Done!