| Business | Phone |
| Advanced Wireless Comms Inc 337 Hospital Dr # P, Glen Burnie 21061 | (410) 761-8767 |
| Communications Electronics Inc 6720 Ritchie Hwy # F, Glen Burnie 21061 | (410) 766-6146 |
| Executive Wireless 7704 Ritchie Hwy, Glen Burnie 21061 | (410) 553-9000 |
| Global Cellular 7900 Ritchie Hwy, Glen Burnie 21061 | (410) 590-4290 |
| Mobile Solution Corp 7900 Ritchie Hwy # U07, Glen Burnie 21061 | (410) 760-1230 |
| Radio Shack 7900 Ritchie Hwy, Glen Burnie 21061 | (410) 553-9111 |