A PDA WITH A PHONE BUILT IN
Great For: Anyone who travels
frequently on business. Having inte-
grated high-speed communica-
tions leaves your PDA's expansion
slots open for other devices
Think Twice If: You're constantly looking for a new cellphone service provider
What to buy: Handspring Treo ($399)
A PHONE ACCESSORY FOR YOUR PDA
Great For: The occasional traveler
who wants to use his PDA as a laptop
substitute for e-mail and Web browsing
Think Twice If: You plan on using the modem frequently -- it's bulky and you have to charge it separately
What to buy: Sprint PCS Wireless Web Digital Link ($200), Casio Pocket Spider ($349)
A CELL PHONE WITH A PDA BUILT IN
Great For: The businessman or socialite who's always on the go -- and on the phone
Think Twice If: You're concerned about how your suit hangs -- these devices are monstrous in size compared with the latest cellphones
What to Buy: Samsung I300 ($350), Kyocera QCP-6035 ($499)
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