Excellent.
I was on a LH flight once, on departure from FRA. A Frenchman was using his 'phone during the taxi out. CC asked him twice to stop, in English and in French. He ignored them and carried on talking.
After a couple of minutes the 'plane stopped, a small grey green vehicle drew up, the doors opened, and on came four armed Bundesgrenzschutzpolizei (sorry if the spelling is not correct). They went straight to him, and carried him off. He was last heard saying : "I will never fly Lufthansa again ....", to which one of the CC replied : "zis is correct sir, you vill never be allowed to fly wiz Lufthansa or any Cherman airline again. Goodbye."
Loud applause throughout the aircraft.