1xxx – bare bones model.
2xxx – entry level with color screen, and maybe a camera.
3xxx – entry level with more features than 2xxx series device.
5xxx – music centric series.
6xxx – mid-range series, good number of features.
7xxx – low to mid-range fashion centric series.
8xxx – high end fashion phones, with strong emphasis on design and materials.
9xxx – communicator series, phones with full keyboards.
Nseries – the ultimate in multimedia devices.
Eseries – business centric series.

We know the 5xxx series has been replaced by the Xseries, and the N and E are here to stay. But what of the rest of them? Sure, 1, 2, and 3 could all fit under the C umbrella, but what about the 6xxx series? I’m predicting the end of the 7xxx series, but ss the 8xxx series gone too now?