FaceTime can be used on Sprint's cellular network through the data plan a customer purchases. Outside of using Sprint's data services, FaceTime is free to use on any Wi-Fi service. FaceTime can be used on a PC or Mac computer and comes preloaded on all recent iOS devices.
There is also an option called FaceTime Audio, which allows a person to make free voice calls using a data plan and not cellular minutes. To use this feature, a SIM card and phone number is required to identify the device on the network. A user must also register the device with an Apple ID.