It's really better to take a sattelite Phone with ya, because you could be reached at every place (most places) and so you get the chance to call for help if is really needed.

at all a simple cell phone could do the most stuff for you, and ... for camera - take a simple analog camera with ya and a little mp3 walkman/discman combination if you're really looking for listing music at ya trip - instead enying the sound of nature around you.