Why does my iPhone say not enough storage?

So my iPhone all of a sudden is saying I do not have enough space. So I've deleted all my apps accept 2 and deleted a lot of pictures, videos, music, etc and it still won't let me download / take pictures. Why? What do I delete?

Back it up and then restore it

  • Why does my iphone say that there's not enough available storage? I deleted about 400 pictures and 20 videos and I have 10 photos right now but if i try to take any it says my storage is full? What can i do to fix this?
  • Why does my iPhone say that I have no storage space? I deleted so many apps and it still says that I have no space. I can't take pictures, download apps, nothing. I've tried turning it off and on and it says the same thing. What can I do to fix it? I'm trying to do everything I can't to restore it.
  • Why does my iphone say I have used so much storage? It say I have used 5.3 GB. It say I have 821mb left. I added up all the apps and and its like 3300 MB. I looked it up and its like 1000 MB in a GB. So that's like 2 GB that's being used that isn't there. What is taking up all my storage. Can someone please explain?! And can someone tell me how to free up some storage if I can
  • Why does my iphone say i have too much storage? I can't take photos or download any apps. I have deleted all my apps, messages, and over 100 photos. It will not let me even update to IOS 7 because it says there's not enough storage. I mean i literally have nothing left on my phone. Do i have to go through icloud? Its a 4s I HAVE DELETED EVERY APP AND OVER 100 PHOTOS AND MUSIC. OK? Thanks mother f****. Tried that. Doesn't work. Anything else?