[Prisen]

By the end of the decade, expect voice and video quality as good as you might expect from HDTV.

Bandwidth wise, this is (at least technically) possible today.

[akgerber]

You can download a full-length HD film to extant (but not-yet-sold) phones and output it via an HDMI port. The only problem is that doing so will burn probably $40 in bandwidth.