It's a bad time to own a Samsung Galaxy Note7, what with their lithium ion batteries' propensity to burst into flames and burn people. And now because of that problem, the MTA has asked riders who own Galaxy Note7s to not bring powered-on phones onto trains and buses, and to not charge the phones on trains and buses either.

The Galaxy Note7 joins self-balancing personal scooters (aka hoverboards aka THINGS THAT DON'T HOVER) in getting banned from subways and buses over fears of spontaneous combustion. If you're scoring at home, that's two pieces of technology this year to be banned by the MTA due to their potential to explode.

Of course, even without Galaxy Note 7s on trains, this still might not be over. In this history of lithium ion batteries put together by Slate, it seems the batteries are both very necessary to power our current technology, are constantly being pushed to their limits by tech companies and aren't governed by universal safety protocols. So, "we should expect many more unpleasant surprises from the existing technology" while scientists quickly work to make non-exploding lithium ion batteries. Man, we already had enough to worry about on the subway even without constantly thinking about people's cell phones bursting into flames on a crowded train. Maybe just bring a book on long subway rides for the foreseeable future?