I need to know something. For example an app like Telegram that is a custom downloaded app uses two ways of keeping the data, 1. in the cache folder and since it is stored in /data it will be removed by factory reset right? 2. internal storage>Telegram>Telegram Images/audio/... this folder is not in /data but is in internal storage. will this folders be deleted by factory reset too? btw I'm using an Samsung Tablet, if it makes any difference.