What is time rounding?
Time rounding is the time unit used by the manufacture to round up your talk time. Usually, time rounding is one minute. For example, if you have talk 23 minutes and 28 seconds, manufacture will count for 24 minutes. If you look at carefully on your regular phone bill, you will notice that all your calls have round up to minutes. It is a convention for the telecommunication industry. If you want to know exact time rounding, please call the customer service for the card you are interested.