Fantastic productivity phone for old school QWERTY junkies.Ambient light sensor.proximity sensor.its like a keyboard phone.i have used this product easy to use. it’s the most natural way for me to communicate with my phone. I can type just fine on a standard on-screen keyboard, but I can type better and faster on my BlackBerry. And I can do it without looking at it with enough proficiency that I’m not embarrassed to send anything I type with my one blind thumb. I can reply to friends or family or I can get some work done — I’ve written blog posts here at AC using my KEYone. That’s not my favorite way to work, but knowing I can is great.