The Samsung Galaxy S6 and S6 Edge are powerful smartphones, perhaps the most powerful mobile phones ever sold. As of the publication of this book, the Galaxy S6s are the standard against which all other Android-based phones are measured.

Each cellular carrier offers a slightly customized version of the Galaxy S6 line-up. Some phones from cellular carriers come out of the box with pre-loaded applications, games, or files. Some come with accessories, such as a corded headset; others don’t. This book doesn’t dwell on these kinds of differences.

Although the name for each network is different, these phones are largely the same (at least one marketing person at each cellular carrier is cringing as you read this). This similarity allows me to write this book in a way that covers the common capabilities. I will simply refer to the phone as the Galaxy S6 unless there is a relevant difference worth mentioning from this point on.

At a more core level, these phones are built for high-speed wireless communications. The cellular carriers have spent kajillions upgrading their networks to offer more coverage and better data speeds than their competition. Again, this book doesn’t dwell on these differences in network technology because they don’t really make much difference (again, at least one engineering person at each cellular carrier is cringing as you read this).

I assume that you already have a Galaxy S6, and I just hope that you have good coverage where you spend more of your ...

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