Typically talking, a display protector bubble arises from a spatial cavity between the floor of your cellphone and the sticky aspect of the protector. The protector is meant to be flush in opposition to the display, but when one thing will get in the best way, slightly pocket of air types and bubbles up within the sealed area. You understand how if you pull an overturned canoe underwater, you’ll be able to stick your head up into it to breathe? It is sort of like that.
So what may cause this cavity to kind? The most typical offender is a spot of mud in your display. Even when it is small, so long as it interferes with the stickiness of the protector, a bubble can kind. Bubbles may also kind when you apply the protector improperly, simply sticking it proper to the display slightly than rolling it downward from the highest.