I saw that there is an overheating and charging issue with some Sprint HTC EVO 3D handsets and HTC knows about it. I hope that this is something that can be fixed with an OTA update. I do not want to switch over to an unreliable handset after having such great reliability and battery life from my Sprint HTC Hero. That would be a darned shame.
I read about it here: HTC Evo 3D Suffering From Overheating Problems?
. I also read the thread they mentioned here: http://androidforums.com/htc-evo-3d/369982-all-owners-please-read-htc-evo-3d-voltage-heat-issues.html