Yeah well my boss literally never touches his (he's got an iPhone,) but he kept it charged. Mine worked well for months, then died randomly.
The other two with the keyboard problem, one was on a plane... he turned the phone off, took his flight and when he got off the top keys didn't work. The other guy is a heavy BB user but has never been much of an abuser. None of the devices I've set up for him have ever busted.
I see no water damage stickers have changed colour, so we'll be sending these two back. Luckily Rogers sends us a new device first