The Nokia N91 8GB is 113.1mm long and 55.2mm wide and has a thickness of about 22mm. With a weight of 165g it is pretty bulky in design. It has a color display with 262K color and S60 software on Symbian OS operating system. It has dedicated music keys which allow you to switch between Music Player and last used application. It has 8 GB hard drive memory capacity for up to 2000 songs. The device has speed dialing and also conference call. The phone’s digital services include the possibility to download games as well as new Themes.

The Nokia N91 8 GB has a 2 mega pixel camera with digital zoom 20x stepless. It has image viewers such as JPEG, EXIF and BMP and still images file format JPEG, YUV and RGB. It also has advanced camera modes like still, burst, video, options for night, brightness adjustment and self-timer.

The Music Player is wisely designed with dedicated playback keys and enhanced on the go playlist management. Meta data for tracks can be viewed and modified directly on the Nokia N91 8GB. The device also has enhanced music features like mixer and 8-band equalizer. Another added feature of the phone is that you can answer calls while listening to music, as the music pauses and resumes once the call is over. One can even transfer any multi media content from the personal computer to the Nokia N91 8GB phone.

The device has a 3.5mm audio jack where one can connect directly with your own headphone or can simply use the Nokia Music Headset HS-28 with remote control. Visual Radio is one other feature of the Nokia N91 8 GB phone where one can listen and interact with your favorite radio stations. You can even obtain information about the song that is playing and other related artist information.

The Voice features of the phone include voice dialing, voice commands, voice recorder and an integrated handsfree speaker. Using the voice record application of the phone one can even make your own music recording. The phone has a talk time up to 3 hours and standby time up to 190 hours .And music playback of up to 10 hours.