Unlimited data plans for smartphones are quickly becoming a thing of the past. Even if you’ve managed to hang on to your unlimited data plan, it’s likely not truly unlimited. Hidden in the fine print of most carrier plans are caps on data usage, speeds, or other caveats you should be aware of. Unlimited data plans are no exception to this—despite the namesake. A common usage cap for unlimited data plans, for example, is mobile hotspotting, for which carriers love to charge that little bit extra. You’ll also find soft caps on data usage each month where the carrier will just slow down your speeds after you pass a certain threshold—a sneaky practice known as “throttling.” On paper, these data caps can seem like a real bummer. But there are things that you, as a socially connected and tech-savvy person with a smartphone and a limited data plan, can do …