FIRST STEP:
Settings>Application Manager>All>Select Problem APPS and CLEAN CACHE AND DATA on what ever apps are giving u an issue.
SECOND STEP:
POWER DOWN PHONE
PULL BATTERY WAIT 20 SECONDS
INSERT BATTERY AND COVER
ENTER RECOVERY MOD BY "HOLDING TOGETHER VOLUME UP, POWER, HOME BUTTONS TILL VIBRATE AND SAMSUNG SPLASH SCREEN RELEASE ONLY POWER BUTTON
WHEN RECOVERY MOD SCREEN APPEARS RELEASE ALL BUTTONS.
SCROLL DOWN WITH VOLUME KEY TO "WIPE CACHE PARTITION" SELECT USING POWER BUTTON
THEN SELECT REBOOT SYSTEM AND PROBLEMS SHOULD BE SOLVED
Settings>Application Manager>All>Select Problem APPS and CLEAN CACHE AND DATA on what ever apps are giving u an issue.
SECOND STEP:
POWER DOWN PHONE
PULL BATTERY WAIT 20 SECONDS
INSERT BATTERY AND COVER
ENTER RECOVERY MOD BY "HOLDING TOGETHER VOLUME UP, POWER, HOME BUTTONS TILL VIBRATE AND SAMSUNG SPLASH SCREEN RELEASE ONLY POWER BUTTON
WHEN RECOVERY MOD SCREEN APPEARS RELEASE ALL BUTTONS.
SCROLL DOWN WITH VOLUME KEY TO "WIPE CACHE PARTITION" SELECT USING POWER BUTTON
THEN SELECT REBOOT SYSTEM AND PROBLEMS SHOULD BE SOLVED