 low call blocking rate, and those services largely independent of engineering, such as good customer service and acceptable plan offerings and billing. Therefore, the wireless provider must decide how to balance its money across engineering for growth, operations, administration, and maintenance (OA&M), customer service, and marketing. However, what might make 3G data services interesting to the customer? What will make people want to pay for wireless data access? For this, we need to distinguish between data services and video services. Although, at present, both use the same transmission technology over the air interface, they are very different products for con- sumers. At this point, our nonbusiness customers have very little use for high-speed mobile data per se. Most demand for data use can be satisfied through short message service (SMS) and enhanced message service (EMS) without even using a voice or data channel. What may be valuable to customers is the ability to transmit images. 1 The picture phone, as such, is of little value and has never become popular. Why? Because it adds little information to a phone call. It might have some value in a conference-call setting because it allows people to see who's talking so that they do not have to interrupt to ask, "Who said that?" High-quality full-speed video phones might be valuable for med- ical, therapy, and coaching sessions, where facial expressions and body language could add information valuable to the purpose of the communication, but such phones are be- yond the bandwidth capacity of current cellular technology. Pictures are interesting and useful not when they show the speaker's face but when they capture images from the speaker's surroundings. The first significant use of cel- lular data for images has been in the use of the cellular phone as a camera to show peo- ple other things. As we look at the development of cellular services across the world and probe into the future, we will return to this issue of how people are finding new ways to use cel