The data plan for the iPhone on Verizon Wireless' network will cost $30 a month, and the carrier is doing away with its tiered data plans for other smart phones.

Experts say explosion of smartphone popularity will hit users in the wallet. NBC's Chris Clackum reports. (NBC News Channel)

Research In Motion aims to keep its dominance of the corporate smart phone market by enabling the BlackBerry to segregate a user's personal data from work-related e-mails and other applications sponsored by employers.

Apple's App Store hit the 10 billion mark Saturday, a little more than 2-1/2 years after it started the app craze for mobile devices, beginning with its iPhone.

For years, payment geeks have promised that cell phones would soon replace the jingle of pocket change, but the promise never materialized. All that may have changed this week, as Starbucks announced that it had begun accepting payments made with iPhones and Blackberries at most stores.

This concept "Line Phone" may represent the final word in hardware design. It's essentially a screen, thick enough to hold the necessary guts plus a presumably large battery. Buttons are scant ? instead, every available surface is touch sensitive.