I've done this before. I had a micro-HDMI to HDMI connector, and a HDMI to DVI connector to plug the phone into the projector. This was about 2 years ago, and I

I've done this before. I had a micro-HDMI to HDMI connector, and a HDMI to DVI connector to plug the phone into the projector. This was about 2 years ago, and I was using a 2 year old phone, IIRC. The experience sucked, but mostly because the app I was using didn't support most PowerPoint features. I'm sure modern phones and apps could handle it pretty well, though. Using the official MS Office apps would probably solve the major issues I had.