Samsung recalled more than 2.5 million devices over exploding batteries in 2016.
"Users do not have to worry about the batteries anymore."
Yahoo had a terrible year, with news of multiple hacks that compromised users' data.
Fire-prone devices subject to a recall and won't be produced any longer.
Samsung's value dropped by $19 billion following production "pause" but longterm damage could be worse.
Millions of devices were recalled after users claimed their devices had caught fire.