Try to, but it just adds up so quickly. Mostly from spotify. Have wifi pretty much everywhere, and I'm always on it, but I still always hit 5GB.
Put it in airplane mode to guarantee you are using the WiFi ?
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It's a matter of principle, AT&T specifically states it's a Unlimited plan, they should live up to their claim. Otherwise it is false advertising and a class action lawsuit is in order!
It is unlimited. You can download all the data you want at the slow throttled speed.