Is it possible to open up the phone and fix the usb port?

The one on my phone shifted back somehow and the connection was really fragile, I sent for it to be repaired and they sent me a new one as well as returning my old one, so I figured I'd have a go at fixing it myself. Are there any guides online for opening the phone at all? I've unscrewed the screws around the case after removing the back, but it still seems pretty secured to the rest of the phone.