Been looking at prices of used iPhones, and some are almost reasonable. I need a cell phone, for CALLS (i dont text or use data and i have a nice iPod)... emergencies really, but i'd also like a nice camera that'll go with me everywhere. I see the iPhone 4's are getting cheap, but are the camera's good on them? MY main concern is if there was a jump in picture quality from the 4 to the 5 or the 6. If the 4 is pretty close to the 5 in picture quality then i'll save my money and get the 4. If the 5 is a LOT better, then i might talk myself into finding a bit more for the better camera.