Like  the Nokia N8, the Nokia E7 has a HDMI out. Connect up your E7 and you  can show whatever is on the E7′s screen on the bigger TV or projector  screen. Oddly not all phones can do this. Some can just show media if  any. Nokia’s TV out gives you a portable PC like experience of hooking  up to a “monitor”, whether it be the browser, the menu, music player,  photos or video player.
Watching movies is particularly great since you’ve got 720p playback  with Dolby Digital Plus surround sound. With the USB to Go feature, you  can connect a hard drive full of media to be played back via the E7.
Here in this video you can see the E7 playing nicely with a 1080p  projector over HDMI out. The projector screen here is 110 inches! That’s  massive! Not as big as the record breaking N8 movie screen  but more than enough for a home theatre. Dang 42″ is good enough, no?  :p The video is in 1080p which better shows off the clarity of HDMI out.
Lastly, don’t forget that if your screen doesn’t have HDMI connection you have the 3.5mm TV-out. As seen in the C7, even though it lacks HDMI out, near HD quality can still be output (very high quality analogue signal).