Well, we'd basically want to target them all!
Given that people change their phones more often than their PCs, one would expect the installed mobile browser base to 'fresher' than the PC one.
In other words, over the medium term (say 2 years) the rendering issue should hopefully fade away.
It's just a question of timing - when is it going to be OK to go 100% HTML5? (assuming, of course, the app is not particularly complex)
It's just a question of timing - when is it going to be OK to go 100% HTML5? (assuming, of course, the app is not particularly complex)