| Business | Phone |
| Action Paging 110 S Cypress Ave, Ontario 91762 | (909) 391-6994 |
| Cingular Wireless 2508 S Grove Ave, Ontario 91761 | (909) 930-6508 |
| Cingular Wireless 4320 Mills Cir, Ontario 91764 | (909) 581-1485 |
| Just Pcs 101 N Euclid Ave, Ontario 91762 | (909) 984-3636 |
| Mobile Solution Corp 1 Mills Cir, Ontario 91764 | (909) 476-4079 |
| Mobile Systems Wireless 1 Mills Cir # 39, Ontario 91764 | (909) 476-7178 |
| Ontario Wireless 2000 S Grove Ave # 108, Ontario 91761 | (909) 230-6300 |
| Pacifica Wireless Ltd 4451 Ontario Mills Pkwy, Ontario 91764 | (909) 481-1444 |
| Photo Cell 1 Mills Cir, Ontario 91764 | (909) 484-1222 |
| Radio Shack 1630 E 4th St # J, Ontario 91764 | (909) 984-3882 |
| Radio Shack 624 W Holt Blvd # A, Ontario 91762 | (909) 391-1878 |
| T & M Wireless World 1118 W Mission Blvd, Ontario 91762 | (909) 467-1306 |
| Torrecell Inc 720 E Holt Blvd, Ontario 91761 | (909) 988-7177 |
| Verizon Wireless 961 N Milliken Ave, Ontario 91764 | (909) 481-7897 |
| Walk N Talk Cellular 2217 E 4th St, Ontario 91764 | (909) 945-8150 |
| Wireless Dimensions 1 Mills Cir, Ontario 91764 | (909) 484-1564 |
| Wireless That's It 1 Mills Cir, Ontario 91764 | (909) 481-3915 |
| Xstream Technologies 2411 S Vineyard Ave, Ontario 91761 | (909) 930-0290 |