Well, maybe not mainstream, since the price tag of this fashion-oriented smartphone might put it out of reach of the general public, but the Nokia 7900 Prism features a 16-million color QVGA OLED display. OLED, a much talked about but still rare technology, promises longer display life and less battery consumption. Check out the Prism's other specs:

• UMTS, quad-band GSM, Bluetooth and USB connectivity
• 1GB internal memory
• 2 megapixel camera
• FM radio
• Music player
• Basic organizer functions
• 850 mAh battery
• For yet another fashion phone, Nokia pays more attention to style than substance. A formula that has found a significant market so far.
  
  Specs courtesy of GSM Arena.