Somehow my Sprint upgrade was bumped up to August so I jumped all over that and got the EVO 3d. I had used the Evo 4g previously. So far my intial review is very positive. Much faster than my Evo and the battery life is ALOT better. I mean ALOT. Other than that considering my Evo was running sense 3.0 there isn't a ton of differences. The 3d is fun to play with but what really attracted me to this phone was the dual core and better battery.