Ultra Mobile is an American mobile virtual network operator (MVNO), founded in 2011, which sells low-cost prepaid mobile phone services with unlimited international calling and text plans, operating on T-Mobile's cellular network in the United States.
In 2015, Ultra Mobile was ranked number #1 on Inc. magazine's list of the 5,000 fastest growing private companies in the United States, with a year-over-year growth rate of 100,849% and revenues of US$118 million in 2014, up from less than a million in 2012. As of 2016, Ultra Mobile was available in over 25,000 retail stores in the US, including Target and 7-Eleven. In 2017, the company offered unlimited calling to 75 countries, and access to over 200 countries.
The company's business model is based on selling SIM cards which can be used with prepaid plans on unlocked phones. This contrasts to selling long terms contracts with a free or discounted locked phone, a model which is currently more prevalent in the US than in other parts of the world.
The Ultra Mobile was co-founded by CEO David Glickman, who has previous founded companies such as TelePacific Communications, Justice Technology, and Primo Connect. In 2017, the company had approximately 150 employees across the US, Europe, and Asia, and has focused on hiring millennials.