The secret: Rubbing Alcohol Screen protector bubbles annoy me a lot. Had my screen protector not been built into my Otterbox Defender iPhone case, it would have been ditched long ago. Yesterday I decided to wipe down my iPhone and it's protective case with Rubbing Alcohol, since it's a super effective cleaning agent. When I put my iPhone back in, and carefully smoothed the screen protector over the iPhone, the bubbles were effectively gone! Awesome!