| Business | Phone |
| Auvida 3343 Fanone Dr, Port Huron 48060 | (810) 984-8641 |
| Business Voice & Data Systems 3805 1/2 Lapeer Rd, Port Huron 48060 | (810) 987-4400 |
| First Telecommunications 2291 Water St, Port Huron 48060 | (810) 987-4543 |
| Phones Plus 2832 Pine Grove Ave, Port Huron 48060 | (810) 985-4050 |