Tello was founded in 2015 in Atlanta, Georgia, a subsidiary of KeepCalling.Net, which was founded in 2002 by Florin Miron. The company is an MVNO, which is a wireless company that does not own the wireless network, but contracts with a network, who will provide the equipment for service. This allows companies such as Tello to provide bulk rate prices, resulting in cheaper cell phone bills.
Tello has been featured on numerous sites, including TomsGuide and PCMag.
Company headquarters are located in Atlanta, Georgia.