| Business | Phone |
| Arcom Wireless 4030 Pike Ln # A, Concord 94520 | (925) 602-1160 |
| Cell Galaxy 1 Sun Valley Mall, Concord 94520 | (925) 356-6967 |
| Cellular & Pager Exchange 2151 Salvio St # F, Concord 94520 | (925) 687-7838 |
| Cellular Warehouse Inc 412 Sun Valley Mall # C, Concord 94520 | (925) 686-5600 |
| Radio Shack 242 Sun Valley Mall, Concord 94520 | (925) 686-1423 |
| 3c Wireless 2465 Salvio St, Concord 94520 | (925) 250-4770 |
| Air America Cellular Concord 94521 | (415) 467-0500 |
| Boost Cellular Sales 1701 Willow Pass Rd # C1, Concord 94520 | (925) 680-6673 |
| Cingular Wireless 309b Sun Valley Mall, Concord 94520 | (925) 825-4608 |
| City Wireless 3381 Port Chicago Hwy, Concord 94520 | (925) 429-0300 |
| Clearcom Wireless 4701 Clayton Rd # E, Concord 94521 | (925) 686-4400 |
| Digicom Wireless 1701 Monument Blvd, Concord 94520 | (925) 521-9999 |
| Let's Talk Cellular & Wireless Stoneridge Mall, Concord 94520 | (925) 459-1404 |