[mmahemoff]

And even longer on iPad, but these will only be useful when they can deal with ESC key. Vim without ESC is like Word without mouse.

[piinbinary]

Some people set it up so that 'jj' (while in insert mode) is equivalent to ESC (or perhaps it was Ctrl-c, I forget). Either way, that would make vim usable with an iOS device's keyboard.

[hammersend]

Esc works perfectly on Hacker's Keyboard which is just a download away on the Android market.