Wiping the Cache Partition Wiping the cache partition is a useful option, particularly after any firmware update, as it will clear out any rubbish left over from the previous firmware. It can also get you out of problems if you are experiencing a boot loop. This is very simple to do and does not affect any user data on your phone. See video... Step #1 Turn your phone OFF. Step #2 Boot into Recovery Mode:- Press and hold, simultaneously, the Volume UP + Power + Home buttons until you see some small, blue, writing appear in the top left hand corner of the screen and release immediately. Step #3 You will then see the small, stock, Recovery menu. Using the Volume UP and DOWN buttons, navigate to the menu item "Wipe cache partition". Step #4 Once the option is highlighted you can use the Power key to enact the wipe and reboot your phone.