I was in SQ F early last year and dozed off early in the flight. I awoke to sounds of a tablet being played loudly. The only other family in F had apparently decided it was cool for their kids to listen to their IPad without headphones.
I spoke to an FA about it and they seemed to be sympathetic. They went to talk to the parents and parents refused to make their kids wear headphones.
Again, this was SQ F. Absolutely pathetic experience.