It's not incredibly unusual to walk into the bathroom at work to the sound of someone talking on the phone from inside a stall. It may be a reflection of where I work or a cultural divide, but I rarely hear English from the stalls. But honest to God I don't get it! Doesn't matter who is doing it. ICK!!
Bring your phone into the bathroom to play a game or read your email if you think it might be an extended stay. But whole phone conversations in a public washroom stall while people in other stalls flush?
I don't get it!