I no longer put on the protector. I just be for careful about putting it in my pocket with keys or pocket change. I get 2+ years without a scratch and by then I get a new phone.
Samsung s6 Screen protector, bubble right top corner-always
Tried 3 screen protectors from (ZAGG Invisishield) and I know they have a free exchange policy. Had 3 different vendors put it on and eventually (a few months) a bubble forms on top right corner.