| Business | Phone |
| Cingular Interactive San Mateo 94403 | (650) 571-8106 |
| Cingular Wireless 157 Hillsdale Mall, San Mateo 94403 | (650) 522-9915 |
| Cingular Wireless 2727 S El Camino Real, San Mateo 94403 | (650) 312-1346 |
| Gsc 1701 Gum St, San Mateo 94402 | (650) 286-3888 |
| Mbuzzy Inc San Mateo 94403 | (650) 522-8811 |
| Radio Shack 43 E 4th Ave, San Mateo 94401 | (650) 348-5467 |
| Super Tech Communications 205 E 4th Ave, San Mateo 94401 | (650) 685-1668 |
| Wireless Pcs 211 E 3rd Ave, San Mateo 94401 | (650) 344-8988 |
| Wireless Specialty's 104 De Anza Blvd, San Mateo 94402 | (650) 577-9700 |