What I do personally on these is I get them fairly warm with a heat gun and pick them off with a nylon spudger. Once I get everything large up I just peel all remaining adhesive up with an exacto knife and run the razor along lightly to insure all glass is removed. Even a tiny piece of glass can crack a digitizer when you seat it. As long as you don't hit the small power flex cable that runs to the volume rockers you can't really go wrong. I work on at least 10 of these a week though and trust me you can get these pretty warm without damaging them. When they are warm the adhesive lets go very easily.