Your UK add-ons (also known as domestic add-ons) starts once your monthly allowance is used up. For example, if you buy a UK data add-on, it'll kick in after your monthly data allowance and Data Rollover are used up. Make sure you buy the UK add-on when your allowance is close to running out. A 7-day data add-on will expire exactly seven days after you bought it, not seven days after it starts being used.

Our Roam Beyond add-ons will start immediately after you purchase it. To avoid incurring out-of-plan charges at your destination, we recommend buying the add-on while you are still in the UK. Alternatively, you can turn your roaming off, arrive at your new destination, connect to a local secure Wi-Fi and then purchase an add-on.

You can buy UK add-ons for 7 days, 30 days and 12 months. We also offer Roam Beyond data add-ons for 1 day, 5 days, and 10 days. These can run across different billing periods depending on when you purchased it. You can check when an add-on is due to expire by going to the dashboard of your iD Mobile app or at my.idmobile.co.uk/login under ‘Add-ons’.

Unfortunately, we don't offer recurring add-ons anymore. If you, however, purchased a recurring add-on from us before they were discontinued, it will keep refreshing every month with each billing period until you cancel. To do that, please, contact us here.

Unfortunately, you cannot cancel an add-on. Your add-on will expire after its duration, depending on which add on you bought.

No, add-ons are not included in your Bill Cap. If your Bill Cap is set at £3.00 and you buy a £3.00 add-on, you’ll still have £3.00 left on your Bill Cap. Find out more about how Bill Caps work here.

Yes, your add-on will remain on your account even if you change your plan.

If you go over your allowance, you’ll be charged out-of-bundle rates until you buy an add-on. Remember, your add-on can’t be backdated or used to cover past usage. But once you’ve bought the add-on, it will help you with limiting out-of-bundle charges by providing better value.

If you’re travelling to one of our 50 free Roaming destinations, you can currently use your monthly allowances and UK add-ons at no extra cost, up to 30GB (subject to our fair usage policy). We now also offer Roam Beyond data add-ons in select destinations. Choose “Roam Beyond” option above to see which destinations are included.