It has two displays and has a camera with Carl Zeiss optics and integrated flash, and can record video with audio.

The 2.1-inch display has a pixel density of 259 ppi, considered the most crispest Nokia screen at the time, and continued to be joint-highest with the N80, E60 and E70 for four years, before being beaten by the Nokia N900 in 2009 with 267 ppi.

[2] It uses the Series 60 2nd Edition, Feature Pack 3 user interface on top of the Symbian OS 8.1a operating system.

Complaints about the N90 include high price, large size, weight, and "chunkiness."

The N90 was featured in Tom Clancy's Splinter Cell: Double Agent as a billboard.