The 6630 is Nokia's first 3G smartphone. It's Nokia's most powerful smartphone yet, built on the Series 60 Symbian operating system with a wealth of pre-installed and downloadable applications. The 6630 is Nokia's flagship phone and it takes smartphones to the next level. Physically it's reminiscent of the 3660, although its more compact and has a better keypad. In terms of functionality, it offers everything that the 7610 can do, with the addition of 3G, an improved camera, faster processor and more memory. For the power user it's a winner!