Check out how to easily wipe cache partition in MITO A880. This operation won't affect your personal files it will only remove temporary cache files. As a result you can refresh Android 6.0 Marshmallow system and optimize .
At first switch off the mobile by pressing the Power key for a few seconds.
After that hold down Volume Down and Power buttons for a couple of seconds.
Release the MITO logo shows up let go of the Power key.
Let go of Volume Down if Recovery Mode shows up.
When the Android Robot image shows up press Volume Up + Power button.
Now select "wipe cache partition"by using Volume keys and the Power button to confirm that.
At the end choose "reboot system now"with the Power key.