If you hate getting marks on the phone...,
Verified Purchase(What is this?)
This review is from: SAMSUNG GALAXY ACE S5830 SCREEN PROTECTOR / GUARD / FILM / COVER, 10-IN-1 PACK PART OF THE QUBITS ACCESSORIES RANGE (Electronics)
then this is the thing to use. I think they are okay mainly because you have to press a little harder on your screen to use, and that has been my problem. But if you hate getting marks on your phone or are worried that sticky fingers might scratch or harm the screen, then get a packet of these.