I have a relevant anecdote. Back when I visited my home country they had this very bizarre mobile plan where the first 10 seconds of all cell phone calls were

I have a relevant anecdote. Back when I visited my home country they had this very bizarre mobile plan where the first 10 seconds of all cell phone calls were free. So what you would see is people hanging up after 10 seconds, recalling the person they were speaking to, continuing the conversation , and then doing it all over again. It was hilarious. It got even crazier when some companies reduced the time limit to 5 seconds.