Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I like that they are universal and cheaper than buying from Sprint, but quality is lacking.

I can't complain too much based on the relatively low price for a pack of three screen protectors, but in comparison to similar products on the market these screen protectors are lacking. Yes, it is difficult to get all of the bubbles out, but the more important issue is just how easily these scratch. I would be inclined to spend the extra money on a better brand next time, because in my experience those are about as difficult to scratch as the screen itself while these scratch like the bottom side of a CD.