Clear Master is a phone cleaner which can set you free from endless mobile phone getting stuck and unknown garbages hide in your phone.In "Clear Master", you can use the core function "clear now" to scan your phone and clean up it, also you can use the "Vibration dedusting" to physically clean the dust in your phone.Most of the features in "Clear Master", would only cost you one click to do their jobs, after that, everything would be fine just like it used to be. Disclosure: "Clear now" feature is the core function in this app, which require the "MANAGE_EXTERNAL_STORAGE" permission to scan the device so that it can find all the garbage out.