One of the most stable and reliable smartphone I've ever used. The battery drains 2% overnight. That's just amazing, even my old Galaxy Nexus drained about 15%. The email and the enterprise features are up there with Blackberry system. Everything works smooth, fast and I've never had anything freeze on me. Just a great device. The only thing I was little sad about was the lack of true innovation and update to OS. iOS 6 feels little bit old comparing to Windows Phone OS and Jelly Bean from Google. There's a ton of other features I love, but overall this is the best smartphone I've had. Previously owned Lumia 800, Galaxy Nexus.