| Business | Phone |
| Absolute Custom Wireless 19336 Montgomery Village Ave, Gaithersburg 20886 | (301) 840-2227 |
| Verizon Wireless 472 N Frederick Ave, Gaithersburg 20877 | (301) 212-9800 |
| And Wireless Communications 701 Russell Ave, Gaithersburg 20877 | (301) 590-0059 |
| Unlimited Wireless Inc 8653 Zetts Ave, Gaithersburg 20877 | (301) 926-7920 |
| T-Mobile 26 Grand Corner Ave # A, Gaithersburg 20878 | (301) 948-8951 |
| T-Mobile 701 Russell Ave, Gaithersburg 20877 | (301) 987-2257 |
| Talk To Me 701 Russell Ave, Gaithersburg 20877 | (301) 208-0944 |
| Sprint Pcs 527 Quince Orchard Rd, Gaithersburg 20878 | (301) 987-5220 |
| Cell Point Scientific 200 Girard St, Gaithersburg 20877 | (301) 977-1788 |
| Cellular Alert Security 500 Midsummer Dr, Gaithersburg 20878 | (301) 258-5044 |
| Centro-Cell 214 N Frederick Ave, Gaithersburg 20877 | (301) 947-1600 |
| Cingular Wireless 15918 Shady Grove Rd, Gaithersburg 20877 | (301) 655-3867 |
| Cingular Wireless 528 N Frederick Ave, Gaithersburg 20877 | (240) 631-1591 |
| Communications Plus 4 Professional Dr # 149, Gaithersburg 20879 | (301) 977-0774 |
| P C Wireless 701 Russell Ave, Gaithersburg 20877 | (301) 947-9524 |
| Nextel Communications 701 Russell Ave, Gaithersburg 20877 | (240) 683-5937 |
| Gadgets Wireless Llc 701 Russell Ave, Gaithersburg 20877 | (301) 330-9006 |
| Max Wireless 221 Muddy Branch Rd, Gaithersburg 20878 | (240) 632-0700 |
| K & B Wireless 118 Market St, Gaithersburg 20878 | (301) 317-6544 |