[4] In common with other Nokia 'Nseries' and 'Eseries' phones of its time (late 2006), the N73 comes loaded with many software applications, including contacts, messaging, picture and video galleries, a music player, a Visual FM Radio, RealPlayer, an IM client, a WAP browser, a full web browser based on KHTML/WebKit, a Microsoft Office document viewer, a PDF viewer, an Adobe Flash Lite viewer and some games.

The Music Edition also includes a 2 GB miniSD card and the phone is completely black.

Nokia has also released another model of the N73 called the 'N73 Special Edition' in the Middle East and North Africa.

Nokia also released an N73 Special Edition in Indonesia, without pre-loaded Islamic applications.

In 2008, updates with the standard features with Nokia Maps Application installed by default (but requires an external bluetooth GPS receiver), Nokia Lifeblog, PTT, and Search applications carried on from the previous updates, plus the addition is the Nokia Mobile TV application also installed by default (requires an external Nokia Mobile TV Receiver SU-33W) which is an application available on N77.

In this update, the phone takes 27 seconds to boot, compared to 42 or more in previous versions.

Making it better compared to Music Edition because of its multimedia keypad rather than having only a single usage button, same features of Music Player like ME that supports album art and visualisations, enhanced control interface and also available on start screen when menu key is pressed and hold after the phone boots up.