I'm ambivalent about portrait QWERTY typing.<p>I struggle to type on a QWERTY touch keypad on the SO's iPhone 4, and much prefer Swype in landscape, and T9 in portrait.<p>Having said that however, Nokia has screwed around with the T9 algorithm to make it 'smart' (at least on the Symbian^3 range). As a result, you can't cycle through options in a predictable manner any more! As a life-long Nokia supporter (so far), and a fan of the awesome industrial design that goes into their products, this is ridiculously infuriating.<p>(For e.g.: 4663 produces 'home' or 'good' first depending on which was used more often recently. Cycling through punctuation symbols is again determined by [what the algo thinks] the most frequently used symbols. Gah.)