The phone is extremely compact. I could not believe it is so thin. With just 15.9 mm, is thinner than most candybar phones. Weighing about 110 grams it seems slightly large for a phone of this type, but that is because it has many metal parts. The 110 grams are not at all excessive, the phone makes you a first impression of compact phone that is pleasant to hold it in your hand. It fits in any pocket, without problems.
6600 fold is made out of quality materials. I already said it looks solid, I will mention it is shiny. That makes it look good, but attracts fingerprints. The phone is available in two colors, black and purple. The problem with fingerprints is more evident for the black version.
Most clamshell phones stay closed with the help of some little springs that hold them in this position. 6600 fold has a different but interesting approach. The phone stays closed because of small magnets, which are located inside, above the screen and the keyboard. The magnets are colored and well masked. Moreover, the opening is made by pressing a button on the right side. When I saw this, I remembered the Ericsson T28.Like the 6555, the 6600 features a smooth back when it is open, along with a concealed display that can be woken up by tapping the phone twice. Inside the 6600 Fold is a 2.1" 320 x 240 pixel OLED paneland a secondary video calling camera. The keypad is a fairly coventional layout, taking advantage of the increased space available on a clamshell phone.
From the outside, the Nokia 6600 Fold is a strikingly elegant phone. Inside there's a practical and sensible layout, so overall the combination of usability and style is very appealing.
Talktime on 3G is around 2.5 hours with up to 10 days standby time. The 6600 slide weighs 110 grams, which is a little heavier than most of the competition, but in terms of size it is fairly compact at 88 x 44 x 16mm.