I am puzzled by how the headline switched from holding a random smartphone in one's pocket to wilfully carrying a dangerous explosive device.
I grant that basically any large lithium batter can do the same (or be induced to do the same), but this one was both common and could go off accidentally, making it a more common and therefore likely threat.
Suggesting that someone go to jail over "SSID naming convention contains Note 7" is absurd.
This is definitely a description of what happens to the batteries.
So I guess it would count as carrying a dangerous explosive device.