Armed with an HTC One (M8), an iPhone 5s and an unreleased Samsung Galaxy S5, Keller conducted a series of drop tests in an effort to determine which flagship smartphone is the sturdiest.

"I am the Samsung Galaxy S5. This is my Ice Bucket Challenge," the phone says in its British Galaxy S-Voice. "Gosh that's freezing. I nominate the iPhone 5S the HTC One M8 and the Nokia Lumia 930." ...