Related Clues:
- Phone business, for short
- AT&T, for one
- Modern industry classification
- Verizon, for one
- Modern company category
- Stock market category
- 45-Across, e.g.
- Phone technology, e.g.
- Verizon or AT&T
- Communications business, shortly
- MCI, for example
- Business with many cells
- Verizon or AT&T, briefly
- Sprint, for one
- Phone service util.