If you’re running out of data or minutes, our UK add-ons give you more when you need it. They’re quick to buy, easy to use and work in the UK and Roam Like Home destinations.
With BT Mobile UK add-ons, you can buy extra data or minutes to boost your allowance. If you often go over your allowance, you might be better off choosing a larger data plan.
You can use UK add-ons abroad in our Roam Like Home destinations, where your UK allowances apply, find out more on our calling costs.
Find out more about UK add-ons or place an order.
What add-ons can I buy, and how much are they?
If you're an existing customer, this is what's available. You can have one data add-on and one unlimited minutes add-on at the same time.
- Add-ons run on a 30-day rolling contract until you cancel them.
- When you first buy an Add-On, it lasts until your next BT Mobile bill. It covers minutes or data used over your inclusive plan allowance, up to the allowance for that Add-On, from your last BT Mobile bill until your next one. (So, if you buy a 500MB Add-On 10 days before the date of your next bill, it’ll cover the data you use for those days and the previous 20).
- Any unused add-on allowance will not carry over when your billing month ends. If you go over your add-on allowance, standard charges will apply.
- Add-on allowances will refresh at the start of each new billing cycle, along with regular tariff allowances.
| BT Mobile add-ons | Price |
|---|---|
| Unlimited minutes add-on | £7.47 |
| 500MB data add-on | £5.97 |
| 1GB data add-on | £8.98 |
| 5GB data add-on | £17.98 |
| 10GB data add-on | £23.99 |
| 15GB data add-on | £35.98 |
How do UK add-ons work?
When you buy an add-on, we’ll add the extra data or minutes to your plan. For example, if you're on the 500MB plan and buy a 500MB add-on, your total allowance will show as 1GB.
What type of calls and data are included in my UK add-on?
Your add-ons cover standard UK calls and data.
Calls included in your allowance:
- Calls to standard UK landline numbers starting with 01, 02 or 03
- Calls to UK mobile numbers. (If you call someone when they're abroad, they will pay any roaming charges)
- When you’re abroad in a Roam like Home country, you can make calls to mobiles and landlines in any Roam like Home country
Data included in your allowance:
- Your data allowance includes mobile data use in the UK or in a Roam like Home country
Can I use my extra data/minutes right away?
Activation can take up to 24 hours, but it’s usually quicker. You can check your allowance anytime at www.bt.com/mymobile or on the My BT Mobile app.
How long does my allowance last?
When you buy an add-on, you’ll get a full month’s allowance until your next bill. It covers any data/minutes you use in the current month, as well as any data/minutes you've used that month above your allowance.
After that, we'll bill you monthly, and your add-on will stay on your account until you cancel. Each month, we'll reset your allowance, and it will last until your next bill - unless you have a data add-on and use it up before then.
How will my UK add-on show on my bill?
When you buy a UK add-on, we'll charge you for the whole month, even if you only ordered it in the middle of the month.
For example, if your bill runs from the 1st to the 30th of each month and you order the 500MB add-on in the middle of the month, you'll see two charges on your first bill—one for the previous month and one for the month ahead.
After that, you'll pay monthly on your bill date.
How do I cancel my UK add-on?
Add-ons stay on your account until you cancel. We’ll remove them from your next bill date, but you can still use your extra data or minutes until then.
I’ve bought an add-on for the wrong SIM
If you’ve got lots of SIMs and have accidentally bought an add-on for the wrong one, then you’ll need to get in touch.