Typically talking, a display protector bubble arises from a spatial cavity between the floor of your cellphone and the sticky facet of the protector. The protector is meant to be flush towards the display, but when one thing will get in the way in which, slightly pocket of air varieties and bubbles up within the sealed house. You know the way if you pull an overturned canoe underwater, you may stick your head up into it to breathe? It is type of like that.
So what could cause this cavity to type? The most typical wrongdoer 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 type. Bubbles may type in case you apply the protector improperly, simply sticking it proper to the display quite than rolling it downward from the highest.