KUALA LUMPUR, Nov. 12 -- It hasn't been a month since the iPhone Duo's launch on October 23, and what was once a weakness (lack of app support) is swiftly being remedied.

For instance: In Malaysia, popular local coffee chain Zus has already added iPhone Duo support to its app, cleverly incorporating the front display and optimising the app's layout on the inner foldout screen.

DuoBook allows easy pairing of the iPhone Duo to a nearby Mac, turning the phone into a mini MacBook.

Readgio turns your iPhone Duo into a book, allowing you to easily read PDFs or e-books and turning the outer iPhone Duo display into a book cover.

The viral Deck-Man brings back retro nostalgia by converting the phone into a miniature portable cassette recorder....