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T Mobile logo on sign

Credit: Kris Carlon / Android Authority
  • A new feature called Network Pass gets new customers unlimited free T-Mobile service for three months.
  • This used to be known as Test Drive, which limited you to 30 days or 30GB of data, whichever came first.
  • Network Pass is available to any unlocked Android or iOS phone that supports eSIM.

One of the magical promises of eSIM technology is the ability to switch to a new carrier without needing to go to a store or even wait for a physical SIM to arrive in the mail. Instead, you just use the electronic SIM card installed in your phone and switch around from carrier to carrier at will.

T-Mobile is now letting us experience some of that reality. The company is rolling out a new feature called Network Pass that, unbelievably, gives you free T-Mobile service for three months. That’s unlimited service, too, with no data caps outside of the usual 50GB throttling limit.