BEFORE:
For my part, replacement is very simple, with a small video under the eyes, it is done in a 10aine minutes. The result is not bad but not perfect, the phone is usable but slipped sensation is less present than before, it's a little less reactive and it often emphasized by pressing a little harder on the keyboard eg. Concerning sizing, no problem on my side. It's still a limit for full-time use of the phone afterwards, which is not my case (for work only). But good for the price, it's worth it.