I saw a video taken at a trade show about glass for a cell phone that was suppose to be near impossible to crack. Demo showed it being hit and surviving. Someone took the phone then hit the glass on the corner of the table. Not too hard. It cracked.
Get a cell phone holder that has rubber and not a smooth surface as this will make it harder to drop. Find one with a wrist strap would be best.
Best just to leave the phone on the kitchen counter.