| Business | Phone |
| Firefly Mobile Inc 250 Parkway Dr, Lincolnshire 60069 | (847) 353-3000 |
| L G Philips Lcd America 2000 Millbrook Dr, Lincolnshire 60069 | (847) 821-7509 |
| Sphere Communications 300 Tri State Intl, Lincolnshire 60069 | (847) 317-0720 |
| Wireless Planet 630 Margate Dr, Lincolnshire 60069 | (847) 400-5993 |