The Jitterbug cellphone can be used with Verizon Wireless through an August 2009 agreement. Service plans for Jitterbug phones continue to be run by GreatCall Inc., Jitterbug's proprietor and creator, as of 2015.
According to CNET, the partnership between Verizon and GreatCall was designed to improve phone service coverage for the Jitterbug device, which offers simple cellphone service geared toward senior citizens. Before the partnership with Verizon Wireless, GreatCall operated the Jitterbug through deals with several different phone carriers. The result was a lack of reliable nationwide coverage. Jitterbug phones feature large buttons and a lighted dial, and the company offers medical alert and health management plans.