I have tried a few Zagg HD screen protectors for my Galaxy phones and now my Fitbit Alta, and I will never buy one again. In every instance, it has been impossible to use the product. I am a very capable technician, but the instructions are lame, full of disclaimers, and the product does not attach to the device per the directions. It is not clear, AT ALL, what is supposed to be separated from what film. Are we supposed to guess what the 'engineer' was thinking when designing this convoluted mess? Whoever wrote the instructions obviously has never tried to follow their own directions. I would rate this zero stars as it was entirely useless. A complete waste of money.
I have tried, and tried again, to give Zagg HD products a chance. No more.
I should say I have a Zagg screen protector on my Galaxy S6 Edge+. It's peeling around all the edges. When it fails completely, I will look for a competitor.