11.   But similar marketing gambits are coming, as cellular companies across the nation begin to compete more aggressively for new customers, Houghton said.

12.   But you may have a vague awareness that cellular companies tack on a roaming charge for using your phone outside the home territory.

13.   By contrast, the four cellular companies already offer roaming facilities covering nearly all of Chile and many countries in Latin America.

14.   Cellular companies question the ability of PCS companies to fulfill all their promises at a lower cost.

15.   Cellular companies such as Comcast Corp., Centennial Cellular Corp. and Comnet Corp. will also benefit, Paul said.

16.   Cellular companies are eager to get in on the data act.

17.   Cellular companies often win when they take a tower dispute to court, industry experts said.

18.   Cellular companies say they have more flexibility than traditional phone companies in issuing numbers because their local calling area encompasses more than one area code.

19.   Cellular Technical Services said it is having difficulty selling its electronic fraud-detection systems to cellular companies.

20.   Cellular companies also are not focusing on backpackers and other outdoor enthusiasts because service in remote areas can be spotty, depending on location and terrain.