My wife and I just traveled to Korea and Japan for the better part of December. And I have a Google Fi plan while she is with T-mobile. My service was superior

My wife and I just traveled to Korea and Japan for the better part of December. And I have a Google Fi plan while she is with T-mobile. My service was superior in several ways: 1. Better and more reliable coverage 2. Roaming surcharges for my (Google Fi) calls where less (albeit, nominally so) at $0.20/min vs $0.25/min 3. While she had some problems enabling her data, the transition of my service in this respect was absolutely seamless (and as just fast as here in the States) 4. Importantly, Google Fi supports tethering abroad whereas T-mobile does not