I am confused about the storage screen. (settings>sd card and phone storage) it says i have external sd card 3.68 gb, internal sd card 13.03 gb and internal phone storage 1.64 gb. What is the difference between them and which one do the apps i download go to? And how can i choose which one to download to? I do not want to run out of space. sorry if i missed these answers somewhere else but ive been trying to find them.