does anybody know the exact amount of days your bill can be late before they shut off your phone?

T-Mobile is not as nice to deal with a Sprint was. The rules to billing can be whatever they say they are. At any time I've had where my bill was a certain amount and they still wanted me to pay an extra $15 or $30 with no rhyme or reason. We do not expect to stay with T-Mobile very long. I stay with Sprint for over 18 years. I've been with T-Mobile for 3 months. Lost most of my services and still paying the same amount bill did not get lowered. Many promises were not kept. We have a total of 7 devices you would think they would try to keep us.