Techly Explains: How does ‘emergency calls only’ mode work when I have no reception?

There are few greater annoyances in the modern world – serious #firstworldproblems here – than having zero coverage, and thus your phone showing up as being able to make ’emergency calls only’ (or, if you’re an Apple user, ‘SOS only’).

That is unless, of course, you are in an emergency situation, in which case those three little words are everything you wanted in the world.

But how can it be that your phone has zero

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