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There are three major components to the wireless industry.
They are:
* Manufacturers
* Carriers or service providers, and
* Third-party agents.
Manufacturers
Make the wireless equipment - the telephone handsets - while secondary market manufacturers usually contract with the manufacturers to make the variety of accessories that accompany many wireless telephones.
Carriers
Provide the actual cellular telephone service including the phone number that is assigned to the wireless telephone.
Third-party agents
Are companies, not affiliated with either the manufacturers or the carriers, who sell service and/or telephone equipment.
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