Boost is the consumer-facing brand for Dish’s nationwide 5G build-out. On its own 5G towers — mostly metro areas — coverage is strong and prices are aggressive. Off-network, Boost roams onto AT&T or T-Mobile, which is where most users actually spend their time today.
Dish’s 5G network covers ~74% of the US population on its own towers. Where Boost falls back to partner networks (AT&T or T-Mobile), speeds and reliability vary by ZIP. Worth checking your address before switching.