The 4 US wireless networks

Every cell phone in the US runs on one of four physical networks. The other ~25 brand names you see (Mint, Visible, Cricket, Tello, Total, Metro, etc.) are MVNOs — resellers that lease wholesale capacity from one of these four. Coverage and tower hardware are determined by the underlying network; pricing, billing, and customer service are determined by the brand.

Network 5G branding Brands on it Plans Cheapest
Verizon 5G UW (Ultra Wideband) 11 31 $15.00
T-Mobile 5G UC (Ultra Capacity) for mid-band, 5G for low-band 7 21 $10.00
AT&T 5G+ for mid-band, 5G for low-band 3 8 $30.00
Dish Dish 5G (Boost-branded for consumer) 2 6 $20.00

For background on what each network actually delivers in practice (low-band vs mid-band vs mmWave, real-world speeds), see our 5G primer and MVNO vs MNO guide.