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Fone Zone is a Crystal Lake, IL-based company in the Telecommunications sector.
Cellit is a Chicago, IL-based company in the Telecommunications sector.
Makler Optical is a Richardson, TX-based company in the Telecommunications sector.
Wireless Matrix is a Herndon, VA-based company in the Telecommunications sector.
Leap Wireless International, Inc. is a United States public telecommunications company that provides wireless services to approximately 4.8 million subscribers through its subsidiary, Cricket Wireless. Leap is the 5th largest wireless telecommunications network in the United States, behind Verizon, AT&T, Sprint, and T-Mobile. It is headquartered in San Diego, California.