How To Never Bust Through Your Smartphone&#39;s Data Cap Again
Unless you're a Sprint customer—or you're grandfathered into an
unlimited data plan—you've only got 2GB of mobile data to play
with before you go broke or get throttled. Here's how to keep
from going over your cap.  The consequences of using more data
than your carrier wants can be scary—and expensive. AT&T and
Verizon start charging $10/month for every 1GB over the cap you
go. T-Mobile won't charge you, but they will throttle your
connection to all hell, which for some people is worse. Sprint?
Well Sprint is unlimited, so woohoo for that.    Start with the
moment of truth: When you find out what kind of Internet hog
you've become. Sign into your mobile carrier account (AT&T,
Verizon, T-Mobile) and check your data usage. If you're like
most people, you're churning through less data than you think.
But if you're like me and your data fluctuates between 400MB one
month and 1.6GB the next, you should get ready to start pruning
some of your habits.