| Business | Phone |
| Advanced Cellular Inc 1791 Decoto Rd, Union City 94587 | (510) 489-8288 |
| City Wireless 1735 Decoto Rd, Union City 94587 | (510) 441-1166 |
| Orange Digital Land 1731 Decoto Rd, Union City 94587 | (510) 489-9928 |
| Penny Wireless 34675 Alvarado Niles Rd, Union City 94587 | (510) 471-4600 |
| Go Wireless 33576 Alvarado Niles Rd, Union City 94587 | (510) 429-9662 |
| Sprint Pcs 31000 Courthouse Dr, Union City 94587 | (510) 429-5100 |
| Viva Wireless 30600 Dyer St, Union City 94587 | (510) 487-2251 |