Try this:
Power off your smartphone
Press and hold "Volume up", "Home" and "Power" at the same time
After the phone vibrates, release the "Power" button but continue to hold "Volume Up" and "home"
Once the "Android System Recovery" screen appears, release all the hardware buttons
Using the "Volume Down" button, navigate to and highlight "wipe cache partition"
Press "Power" to select the option
Once the cache partition has been wiped, "Reboot System Now" should be highlighted
Press the "Power" key to reboot your device