it seems:
Q: What is a Windows Mobile-based Pocket PC?
A: A Windows Mobileââ€Ãâ €¦Â¾Ãƒâ€šÃ‚¢-based Pocket PC is a handheld device that enables you to store and retrieve e-mail, contacts, appointments, play multimedia files, games, exchange text messages with MSN Messenger, browse the Web, and more. You can also exchange, or synchronize, information with a desktop computer.
Q: What is a Windows Mobile-based Pocket PC Phone?
A: A Windows Mobile-based Pocket PC Phone combines all the standard functionality of a Windows Mobile-based Pocket PC with that of a feature-rich mobile phone. Windows Mobile software for Pocket PC Phone integrates the PDA and phone experience so you can dial from contacts, send SMS messages, identify incoming callers or easily take call notes. Using a Windows Mobile-based Pocket PC Phone and wireless service through a mobile operator such as T-Mobile, you can wirelessly access the Internet, your corporate networks, and send and receive e-mail to help you stay in touch while on the go.
Q: What is a Windows Mobile-based Smartphone?
A: A Windows Mobile-based Smartphone integrates PDA-type functionality into a voice-centric handset comparable in size to today's mobile phones. A Windows Mobile-based Smartphone is designed for one-handed operation with keypad access to both voice or data features. It is optimized for voice and text communication; wireless access to Outlook information and encrypted browsing to corporate and Internet information and services. Windows Mobile-based Smartphone gives you a choice to communicate via voice or text along with the ability to access information and services so you can stay in-touch while on the go.
now all i need to do is figure the limitations of each one