The positives: the price, the number of films (6, which is pretty good because it's not easy to install and the first for me was a failure) and cutting that is well suited G620s ( LED holes, the front camera, etc.)
Cons: not easy to ask and I noticed especially that the film was scratched just by rubbing it with a handkerchief. So I find that they are very fragile. But for the price and the number of films, I think that is enough. To see in time.