To quickly estimate how many minutes you may use in a month, think of daily use of a cellphone as about 575 minutes per month, using the cellphone a few times a week as about 350 minutes and very brief occasional calls, just to say where you are, as about 30 – 50 minutes per month. Keep in mind that the way you originally planned to use the cellphone may change over time. This could cause an increase or decrease in the amount of minutes you require. At this point you should reconsider the plan you have subscribed to.
an “emerging rule of thumb”?? ha ha ha.