remove Memory and Sim card and enter this code *#7370# to format your mobile and clear from virus >its best way ok
1.) Turn off the phone and remove battery for 5min 2.) Reinsert battery 3.) Press and hold the green, red and camera buttons. DO NOT LET GO. 4.) While holding the three buttons, press the power key to boot the phone up. 5.) Keep on pressing until you see the country selection screen. A correctly done hard reset would show you that everything on the phone (contacts, messages, calendar entries, etc) would be deleted. So it is advisable to back them up. Upon restoration, do not restore settings or files if possible. If you find my post helpful please click the green star on the left under the avatar. Thanks.
