To ensure that you don’t experience any unexpected bills, there is a data cap* in place once you reach your data allowance limit. You can check the status of this in My Vodafone or the My Vodafone App.
If you run out of data, then you can opt to purchase a one-time data extra at £30 for 50GB data. This can also be done through My Vodafone or the My Vodafone App.
*If this data cap is removed, it will be automatically re-added within 24 hours. However, in the meantime you may go over your allowance limit and carry on using data at £6.50 for every 250MB.