But video chat will work only on iPhone 4s and over Wi-Fi
Business users may not be ready to be seen; younger customers likely to latch on
Mobile phone users, rival carriers and Internet content providers may all feel the impact of AT&T's new data pricing plan
Sunrise Wireless offers public Wi-Fi for recreational boaters and WiMax for commercial vessels
But that's not the same as saying 40% of sales are made to businesses
Software makes it possible to share a book with a friend on another device
iPad tablet, other devices with e-book content will cap e-reader sales
ChangeWave survey shows Android devices are close behind the iPhone
