MagicJack is a Voice over Internet Protocol device that allows users to make unlimited calls to any phone number in the United States, Canada and Puerto Rico, including cellular phone numbers. According to HowStuffWorks, international rates are also available on a per-minute basis.
Many different VoIP devices exist, and similar technology is available for cell phone users as well. These services rely on broadband Internet access rather than traditional phone lines to carry calls. The result is normally a much lower price, usually a flat rate, and unlimited use of the service. As of 2014, consumers have many choices in terms of VoIP devices and services, and both the technology and price continue to improve.