HTC 2125 / 2100 (Faraday)

Well basically it's a more complex phone, usually with a full array of features(Bluetooth, EDGE, Wi-Fi, etc). Mainly it has an operating system, such as Windows Mobile or Symbian, like a computer with say Windows XP. Then you jump from Smartphone to Pocket PC, which basically is a small computer, and even more complex. They also have a CPU, like a full size computer. Usually bigger screens, more pixels, & @ least 16 bit color. Also with these phones you have & can load various programs for almost anything & usually at least one storage card. Hope this helps, I don't know if there's a specific definition?