Frankly, F/OSS driver support for current smartphones is crap (binary blobs), and for future stuff the future looks bleak (no public driver releases at all from

Frankly, F/OSS driver support for current smartphones is crap (binary blobs), and for future stuff the future looks bleak (no public driver releases at all from upstream, not even in binary form -- look at the new Nexus 7 shenangians). To be honest, I don't think Canonical could plausibly support new major smartphones even if they wanted to.