1 calendar month, starting from your most recent top-up. For example, if you top up on 8 November at 12.35 am, your bundle will remain valid until 08 December 12.35 am.
We define one calendar month as the period starting on a specific day of a month until the same day the next month. A calendar month can therefore be 28, 29 (in leap years), 30 or 31 days long. Another example: if you top up in March, your bundle will be valid for 31 days. If you top up in April, your bundle will be valid for 30 days.
And my remaining calling credit?
If you have any calling credit left, it will be transferred to the next month and added to your next top-up. Calling credit from a top-up is valid for 6 months and then expires.
What happens after a month?
If the month is over and you haven't topped up yet, you'll be calling, texting, and surfing out-of-bundle and the out-of-bundle rates will apply.