Stowaway keyboard works with my Windows Mobile Smartphone 6.1. Other reviews did not mention this version of Windows Mobil Operating System so I am making this review. If you are interested in Windows Mobile Smartphone 6.1, 6.5, etc. then please mark this review as being useful so that it gets ranked in a way that other with newer phones can also see that it will work.I got it connect with my HTC Touch Pro 2 in a manner of a few minutes. I believe that this should work with any Windows Mobile Phone know matter what your brand/model of Windows Mobile Smart Phone.So far the keyboard works within an application. Some phone buttons are not mapped to a key sequence equivalent. For instance I can type in a txt message, but I have to press the SEND on the phone screen to have the text sent.The keyboard comes with a nice case, and is very compact when folded. Take time when you get it and learn the trick to opening it up when folded and how to correctly refold...It is much nicer than the phone's keyboard.