BenQ M300 - Manual (Page 97)

Menus 83
• Details: Displays the name of the ring tone, its file size, and
whether it is a default ring tone, or a file that you have saved or
downloaded yourself (noted as User Defined).
Cleanup All
Deletes all the data stored in the media center.
Memory Status
Displays the amount of remaining available memory, including photos,
images, and ring tones stored on the phone.