An ‘add-on’ is a bundle of minutes, texts or data that you can buy using your debit or credit card or top-up credit, to give you better value than our standard rates.
You can buy an add-on if you run out of one or more of your allowances.
Don’t worry, if you ever run out of data we won’t charge you any further – we’ll let you know once you run out and give you an option to buy more, if you need it.