The Rezound battery life is not as good as the Bionic but I am mostly in 4G/LTE now where my Bionic was mostly in 3G or no data at all. I bought the extended battery and it lasts me all day. The phone is thicker too but I don't mind that. I don't want a thin phone. I want a phone that works. The Rezound actually works like it should. I am still getting used to it so I can't comment yet on every feature but the 720p screen is nice. Yes the Bionic screen is brighter outside but again, the Bionic is buggy and not 720p. Starting to love my Rezound!