i agree with MiniMike,
Last week my HD2 fell while i was on a ladder about 2.5m up, still works. it fell a few times in this 2 years. once i s--- u not, it fell in a puddle of water, and layed in for a few seconds face down, it was in one of those body gloves but the full screen was open. i took it out the water, found that it was still on, took it out the cover wiped it down, and it was fine. that was about a year ago.
When i still had the Tytn, my son was about 1yr old. he used to take the phone from me for the sole purpose of throwing it to the ground. The battery cover and battery fell out, but when put back together , it still worked