I use a iPhone 3GS at wireless sites when when I stop for a break. Very nice to gets text messages anywhere, takes reasonable photos. Easy to pull over and answer. Cannot do that with the tablets.
iPhone carried on my belt.
So much easier to carry and use than any tablet. My Dell Streak 7 and Amazon Fire HD are hardly used anymore. Those were kind of a waste of money.
Lindows, Linspire, Freespire, Ubuntu, Mint 15 Cinnamon, Mint 16 XFCE