Why does my iPhone 5 say memory full?

I bought an iPhone 5 In January and it keeps saying memory full even though it says I have 3.9gb/5gb left. It's a 16gb phone with only 10 apps and no music whatsoever. I do have about 3000 photographs. Even though I've deleted loads and all my photo stream plus multiple apps it keeps saying its full!

Take it to your nearest apple store and show it to them

  • Why does my iPhone say it doesn't have memory when I haven't used all of it? I've had an iPhone 4s for about 5 months now and for some reason it says I don't have any memory left. It's got 16gb. I've used about 5gigs of music and mabey 2 in games but it says I only have 100 megabytes left. I went to system, usage and added up all the things i have downloaded and it comes up to around 10 gigabytes. Why does it say I don't have memory left?
  • Why does my Iphone 5s memory say other? Okay so I updated my Iphone 5s to IOS 8 and since then when I connect it to my laptop, in the memory usage on Itunes it says "other". What is that and how can I delete it/ lower the space it takes?
  • Why does it say my storage is full? (Iphone 4s)? Ok so I have the 6.0 GB which sucks I'm getting a new phone soon! But anyways I have 3 pictures in my gallery and 7 downloaded apps. The rest of the apps come with the phone, and Can't be deleted. But yet my phone can't take pictures nor download anymore apps? Because "no more storage" I use to have like 30 pics and like 20 apps downloaded until it told me storage full then I deleted almost everything but yet it still wants to tell me that.
  • IPhone says memory is full:3? It says the memory is full, but I have like four apps and 500 pictures… Which isn't a lot compared to my iPod. I don't get why my memory is full:/ It says like 6.5gb but I have 8gb where's the rest and whys my phone use so much memory?