What’s “data roaming?” Lisa was under the impression that it meant roughly the same thing as voice roaming: using up one’s data allotment while in an area outside of your carrier’s coverage. The phone will indicate when you’re roaming so you don’t rack up expensive roaming minutes or megabytes. Except that’s not how it works: Lisa’s phone just roamed invisibly. Her mother’s apartment is in a previously undisclosed T-Mobile black hole, and she ran out of data while traveling. [More]
