And because they are used so heavily these days, people carry power banks to charge their phones. God forbid people thes days run out of phone battery!
You'd really be happy with this fairly extreme risk on your flight, ranmar?
Ban on carriage, I agree probably not the best solution. But they should be treated a lot like e-cigarettes- not checked in and they must be off; the questions should be asked by checkin staff and it should be announced on board to keep them turned off.
It's not like this thing has been recalled because of software issues. It bloody catches fire easily!!!