Sure, the HTC Evo 4G is one of the first smartphones to offer an HDMI-out port, but how well does it really perform?
On the bottom of the Evo is a small HDMI-out port. It's much smaller than the HDMI interface you're probably used to, so make sure to purchase a Micro-D size cable. One end will fit the port at the bottom of the Evo and the other end terminates in a standard HDMI interface.
After spending some time encoding various file formats and sizes, we found that MP4 movie files performed the most consistently. Also, files rendered closer to the Evo's native 800x480 resolution worked best as larger videos stuttered and would not play properly on-screen.
We were a bit disappointed in the lack of control the Evo gives in terms of HDMI-out playback. In fact, there are absolutely no settings associated with the connection. Other than videos stored on the external MicroSD card and YouTube, the phone can't play anything else through the port--this also includes third party software like Slingbox Player Mobile. Oddly enough, the Evo can't display individual photos either; they must be arranged together in a slideshow for them to show up correctly.
The Evo seems to output all video at 720p (1280x720), regardless of the source resolution. Also, it takes a few seconds for the phone to handshake with a TV, so be prepared to miss the first second or two of playback. In terms of sound, every video file played back was accompanied with solid audio quality. You can control the volume of the source material via the Evo's two-button rocker on the right side of the device.… Read more