Stay connected with AT&T in Ellicott City. We offer phones, tablets, smartwatches, and connected devices from all of your favorite brands. We also offer wireless data plans in Ellicott City for every need. Enjoy the flexibility of an Ellicott City prepaid phone plan-with no annual contract and no credit check. Get unlimited text and data with AT&T UNLIMITED ELITE. Get nationwide AT&T 5G service, which comes with all of our unlimited data plans for no extra cost.