|Compatible networks||UMTS/GSM 850/900/1800/1900|
|Availability by country||2007|
|Dimensions||102 x 50 x 17.9 mm, 86 cc|
|Operating system||Symbian OS 9.2|
|Battery||Li-Po 1050 mAh (BP-6MT)|
|Display||240 x 320 pixels, 2.4", 16M Colors|
|Rear camera||2 MP / 1600 x 1200 px|
|Front camera||CIF Video Call Camera|
The N81 was marketed as a mobile gaming device, similar like the 2003 N-Gage. It was the first device that came preloaded with the N-Gage 2.0 gaming service in 2008 (albeit in public beta), and it came with two dedicated gaming keys that can be used for N-Gage games and other applications. The four-way navigation key, the silver-coloured slightly rounded square key below the display, also contains a capacitive sensor. Some firmware revisions allowed the user to scroll through options by 'stroking' the key in a similar manner to the click-wheel on some models of iPod. During the launch of N-Gage, the N81 was specifically chosen by Nokia in advertisements. The N81 is notable for being the only N-Gage 2.0 device with special gaming keys.
The Nokia N81 suffered from lower sound output due to the release of the new firmware version. According to Nokia, they must follow an international standard wherein a device's initial or default volume must be set too low to cause any damage to its users.
- "Review", CNet, http://reviews.cnet.com/cell-phones/nokia-n81-8gb-unlocked/4505-6454_7-32581816.html
- "Nokia N81", S21, http://www.s21.com/nokia-n81.htm
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