Bert G. has an important question:
“We have a good phone plan with a major cellular carrier that gives us a generous data allowance each month, but we’re burning gigabytes like camp wood,” he said. “We can’t figure out why. What’s happening?”
This problem seems to be epidemic lately among travelers. Part of the reason is that we’ve got more data-capable devices now, including laptops, tablets, phones, game platforms, fitness bands, cameras, etc. You should be careful about which devices you allow to connect to your wireless hotspot.
The other part of the problem is the fault of new software that automatically updates itself to the latest version. Go through your laptop and tablet and look for settings to disable “automatic updates” of any kind. If you have a choice, tell the device to “Ask me” every time before loading new software.
You’ll find these settings in several places, including for the operating system itself (Windows, Mac OS X, iOS, Android, etc.) and for individual programs like browsers, Adobe Flash, Microsoft Office, iTunes, and many other commonly used programs.
Be wary of a setting that says something like “Update only when connected to Wi-Fi”. When your laptop or tablet connects to your hotspot, it thinks that’s free Wi-Fi. The device can’t distinguish between the unlimited Wi-Fi from a coffee shop and the Wi-Fi your “pay-by-the-gigabyte” hotspot provides.
Finally, don’t let friends and campground neighbors “borrow” your Wi-Fi for a little while. Once their device connects to your hotspot, it will continue to automatically connect (and possibly download massive software updates) without being asked, unless it is specifically told to “forget” your hotspot.