To Sign up for Wireless Service:
Call 1-800-459-4545

To reach Customer Care by Phone
Call 1-800-GETCEL1. From your wireless phone, dial *611.

Write to us at:
Cellular One Washington/Baltimore
7855 Walker Drive
Greenbelt, Maryland 20770
301-489-3600

We’ve made contacting the wireless experts at Cellular One Washington/Baltimore as easy as filling out an online form and clicking the submit button. Each form is directed to specific professionals within our Customer Care department. Simply choose the form that best represents your topic and tell us how we can help you.