1.  Analysts say wireless use could double in a few years.

2.  Adding to the lure is the recognition that the price of wireless use has been dropping for years and probably will keep falling.

3.  For starters, none of the major Net ratings companies has started tracking wireless Web use.

4.  Industry observers generally consider the United States to be far behind Japan in wireless Internet use.

5.  McCaw executives say they are making affordable a wide range of new wireless uses.

6.  Penetration, or the percentage of the population that has wireless phones, is another way to measure wireless use.

7.  Some have suggested banning wireless use in the car except for emergencies.

8.  Wireless use is also high in some developing nations like India and Africa, where traditional telephone service is rare.

9.  The service has made Japan a global leader in wireless Internet use.