Stands for "Fiber Optic Service." Fios is a telecommunications network owned by Verizon that uses fiber optic cables to transfer data. It is considered a "Fiber to the Premises," or FTTP service, since it brings fiber optic data transmission to residential homes as well as businesses. Fios supports data transfer rates of 940 Mbps downstream and 880 Mbps upstream.
Services include Fios Internet, Fios TV, and Fios Digital Voice. Fios Internet is a high-speed broadband connection to the Internet where Verizon serves as the ISP. Fios TV is high-definition television service that provides over 400 channels, similar to cable television. Fios Digital Voice is similar to a traditional telephone service. It provides a phone number and supports both domestic and international calls.
Since Fios uses 100% fiber optic cables, it is one of the fastest Internet services available. It is also known for its high reliability. However, Fios is only available in specific areas of the United States that are connected to Verizon's fiber optic network. To find out if you can get Fios where you live, check Verizon's Fios Availability.