I just installed the Steinhel Utlra Crystal protector yesterday, and it's by far the best screen protector i've ever used. It's crystal clear, and doesn't affect the sensors or camera quality whatsoever. It's also not sticky or soft like others i've used. Glad they send 2 in a pack, i cheesed the first one 'cause i couldn't find the actual "protector" itself (too many layers lol). Fitment was on the smaller side which was a good thing, made alignment more forgiving. Mine is aligned evenly from top to bottom, but it's a little to the left more than to the right and i'm quite OCD (i was frustrated from messing up the first one). I actually had 0 bubbles in the middle at all, but 1 side and 1 corner wouldn't "attach" completely but you had to LOOK hard to see it. After an hour or two, everything smoothed over and now it's smooth as glass and crystal clear and every bit of it is solidly attached. I liked the fact they even included tape strips to remove dust if needed, awesome. I'm still awaiting my case from ebay to see how much actual screen will still be exposed.