| Business | Phone |
| A T Wireless 10300 Little Patuxent Pkwy, Columbia 21044 | (410) 772-9777 |
| Aaa Wireless 10840 Little Patuxent Pkwy, Columbia 21044 | (410) 964-0313 |
| Cellular Service Ctr 9550 Berger Rd, Columbia 21046 | (301) 854-0054 |
| Cingular Wireless 10300 Little Patuxent Pkwy, Columbia 21044 | (410) 992-3807 |
| Cingular Wireless 6490 Dobbin Center Way, Columbia 21045 | (410) 992-0223 |
| Nextel Retail 10300 Little Patuxent Pkwy, Columbia 21044 | (410) 772-9424 |
| Sprint 6435 Dobbin Rd # B8, Columbia 21045 | (410) 740-8250 |
| T-Mobile 10300 Little Patuxent Pkwy, Columbia 21044 | (410) 730-0030 |
| Usa Mobility Inc 7090 Samuel Morse Dr, Columbia 21046 | (410) 872-8580 |
| Verizon Wireless 9021 Snowden Square Dr, Columbia 21046 | (410) 872-7200 |
| Wireless Acquisition Svc Inc 10015 Old Columbia Rd # B, Columbia 21046 | (410) 312-5454 |
| Wireless Dimensions 10300 Little Patuxent Pkwy, Columbia 21044 | (410) 740-1511 |
| Wireless Retail Inc 9011 Snowden River Pkwy, Columbia 21046 | (410) 872-1507 |