Check out how to easily wipe cache partition in ALIGATOR S4515 Duo IPS. This operation won't affect your personal files it will only remove temporary cache files. As a result you can refresh Android 4.2 Jelly Bean system and optimize MR6588TA.
Firstly, you should hold down Power Key for a couple of seconds in order to turn your ALIGATOR S4515 Duo IPS off.
When your phone is completely off, you should proceed to the Recovery Mode by holding Power Key + Volume Up for about 5 seconds.
After you see Android robot pop up on screen, hold down Power Key and press Volume Up once to proceed.
In Recovery Mode, using Volume Keys to navigate and Power Key to select, you should select option "wipe cache partition".
Wait till cache wipe completes, and after that select option "reboot system now" to restart your ALIGATOR S4515 Duo IPS and that's it.