No, not unless you didn't put the screws back in....Apple has a particular set of screws, and need particular screwdriver to open em, if you put em back in, they have no idea if you did anything....all they can check is if its water damaged or jailbroken....also, have you met the so-called Apple Geniuses, they might be smart, but they ain't no geniuses....you can get stuff by em
if anything happens just put the glass back the way it is, if it even voids the warranty, but they can never tell with simple stuff like that