How well it works depends on how well you've applied it. I've seen some botched applications. Good news is that they're cheap, so you can try again with a new o

How well it works depends on how well you've applied it. I've seen some botched applications. Good news is that they're cheap, so you can try again with a new one. Try searching Youtube for application walkthroughs and tips. There could be differences in protector quality as well, I've no idea about that.