Cellular Devices (B Series SoM, Tracker SoM, Tracker One, Boron, E404X, E Series, and Electron):

The Cellular class is available on the the Boron, B Series SoM, and Tracker (Gen 3) and Electron and E Series (Gen 2).

It is not available on Wi-Fi devices including the P2, Photon 2, Argon, Photon, and P1.