I TELL U WHAT DUDE,
AS FAR AS I CAN UNDERSTAND THERE IS A VIRUS IN UR PHONE
BACK UP ALL UR DATA AND TAKE YOUR MMC OUT.
AFTER THAT IN THE STANDBY SCREEN,
TYPE *#7370#
THEN THE PHONE WILL ASK U IF YOU WANT TO PUT PHONE BACK TO ORIGINAL STATE.
CLICK YES AND ENTRE THE OLOCK CODE OF THE PHONE DEFAULT (12345)
RESTART PHONE AND IT SHALL BE FINE.
ALSO REMEMBER TO DO THIS WITH UR PHONE ON CHARGING
REP ME IF THIS HELPS.
ANY QUERIES, PM ME I WILL RESPOND.