Log in to the iD Mobile
app, go to ‘Add-ons’, click on 'Buy' and choose the add-on
you want. Then click ‘Buy now’ and confirm your purchase. Your add-on will be added
to your account.
Please note: Add-ons are not included in your Bill
Cap. So 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.