Chosen Solution
Ok so basically i repaird my 5s and everything went great until the last part, i cant snap the screen back in, sometimes when i try to snap it on, only one side goes in and the other side wont, then i try to snap it in evently, and it wont do it! I did the iphone 5 to iPhone 6 mini converstion
Look at the back of the screen. Specially the ear speaker. Anything stuck on it? Then look in the case, anything like a screw or something obstructing and preventing it from going back in? The camera, is it level or protruding? How about the small brackets on the side walls of the iPhone, where the metal frame of the screen clips in. Are they all there? Anything upside down? Are you sliding the screen in at the top, underneath the edges of the frame? It would help if you can post a picture (clear one), specially that iPhone 5 to 6 mini conversion does not make sense to me..