** Delete the cache **

This program is deleting files (such as photos, video, etc.) in applications such as cable, WhatsApp, Bytalk, Instagram, etc. will be sent to you and you can see, all of them stored in your phone memory and your they do not observe in your gallery and occupy your phone memory

Probably the trouble that you can not open the telegram photos, this was an example to explain more

If you experience problems, or feedback from within the app get a notification email.