I have a question., my phone is about 3gb and its about out. how much of that data is needed to browse the internet and use websites like youtube without problems? i heard there needs to be enough space for caching. if not then is it possible to browse the internet and save temporary internet files to a microsd instead? i have a smartphone and i was worrying the amount of space may be an issue. my microsd is 64gb if that matters. thanks