According to some tests, a number of Google mobile apps (including Hangouts, Plus, and the search bar) seem to work okay on different airline WiFi setups _without_ actually ponying up for data connectivity. Southwest, United, and GoGo services are all mentioned.
I definitely have to try this next time I fly.
What You Can Access Online Without Paying for In-Flight Wi-Fi
Maybe I’m a sucker because I pay for in-flight Wi-Fi. Turns out there’s a bunch of services on your phone that work without ever needing to pay.
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