Got Fi? Google's unusual wireless service may have shifted its name from Project Fi to Google Fi this fall, but its core proposition remains the same: Pay only for the data you use, and avoid all the traditional carrier gotchas and nonsense.

For the right kind of person, especially among those of us on Android, Fi can be a real cost- and hassle-saver. And aside from its most prominently promoted perks — the seamless network-switching, the public Wi-Fi use, the fee-free roaming and hotspot capabilities, and so on — Fi has some pretty interesting out-of-the-way options that can really elevate your experience.

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