Excuse me if my biased opinion comes out for the following mod. I loathe slider keyboards as much as I dislike any smartphone feature. That being said, accessory company Nuu unveiled a concept that adds a physical keyboard to the iPhone 4.
Nuu showed off the idea in Berlin and it is said to be hitting the market around the holidays. ModMyI has more shots of the product that works using an adjustable sliding hinge. Yes, a hinge on our beautiful phone...