Although the initial batches of the Nokia 6600 were not stable, later system software upgrades corrected the situation.
The phone has the capacity to support the installation of a wide range of third-party software such as mp3 and multimedia players, games, web browsers, GPS navigation, office suites, and GUI themes, via Java and ePoc (*.sis) installers. GUI themes can be created using the free Nokia Symbian Theme Studio.
The model was released to the general public in two color schemes: black and white and full black. Additional color schemes (blue and white, pink) were produced for promotional purposes.
In the year 2007, Nokia stopped production of the 6600 handsets. In India, this mobile phone dominated the mobile market for a lot of time.