My mate, otherwise a good bloke spent lots of a qualifying comp yesterday on his phone. Apparently it's important as he's having a kitchen fitted.

I'm stood over a 4 footer on 5th green, take putter back, phone rings... I step away, of course I missed when I tried again. That's my head in a bad place for next half hour.
He's the guy who has iffy etiquette at the best of times.
I'm going to have stop playing Comps with him.