I tested T-Mobile on my own phone for two weeks before switching, and it cost me nothing

The grass is always greener on the other side… or is it? When you’re subscribed to an expensive unlimited 5G plan, you remember all the mass outages, coverage dead zones, and throttled speeds. It’s easy to think that switching to another mobile carrier will solve your connectivity woes. The big three U.S. carriers — AT&T, Verizon, and T-Mobile — are always trying to poach each other’s customers. They might even offer you a sweet deal and pay off your existing contract to get you to jump ship. You won’t know whether the coverage, speed, and reliability is better than your carrier’s until after you switch.