So, it happened. My first drop on hard surface and I am greeted with a crack in the glass. Ugh. The digitizer is perfectly fine however. I have found a local repair shop and they assure me they use OEM glass. I am still concerned. They did pull out one of their glass pieces from the back and did the water drop test. The water held together just like it did on my GS4. 1. Does this prove it to be OEM? 2. Is there a sure-fire way to know if it is it OEM or not? Thank you in advance.