Sign in to your C Spire online account, click "Add a Line" in the top left of your signed in view, choose a device and plan for your new line, and confirm your information at checkout. Then, once you get your new device, you’ll follow the instructions in the box to activate it.
Don’t have a C Spire online account yet? Register for yours now. You can also chat with us online, call us at 833-711-1401, or stop by your local C Spire store if you need help adding your new line.