What's the difference between my cap and credit limit?

Your credit limit is the maximum out-of-plan charges you can incur on an iD connection (not including your monthly line rental, add-ons, and any other admin charges). It is an amount, in pounds, based on the results of the credit checks we processed when you bought your iD Mobile plan.

Your cap is an adjustable 'out-of-plan spend' limit placed on your account. You can adjust it between £0 and your credit limit with the iD Mobile app or My Account online.