A:AnswerThe larger notch in the center is for the camera. The other 2 are for the sensors for the screen to brighten/dim and sleep depending on your settings.
A:AnswerYou can but that doesn’t solve the broken glass issue. I did that for a grand daughter as a temporary fix until she could replace the glass on her phone.
A:AnswerNot sure why it keeps directing you to the ZAGG. It is a great product as I purchased one for my iPad. One time purchase, a little more expensive but you only purchase it one time. If it ever has to be replaced it’s free. BB will not charge you again to put it on.