How Pay As You Go Add-ons work.

Add-ons are a great way to get more for your money. Convert your credit into an Add-on to get data, calls or texts at the best value. Converting your credit into an Add-on is quick and easy, you can do it when you top-up, or you can grab an Add-on at any other time, as long as you have enough credit.

What's the difference between a top-up and an Add-on?


When your credit runs low, you top-up to get more credit.

When you top-up, you get our standard 321 rates.

All-in-One Add-on.

Once you've topped up and have credit, you can convert it to an Add-on.

Add-ons give you more for your money than our standard 321 rates, but they only last 30 days.

Top-up and Add-On comparison.

£10 Top-up.

Based on our Pay-As-You-Go 321 rates.

330MB data          110 minutes         165 texts

£10 Top-up converted into an Add-on.

Only lasts for 30 days.

1GB data          3000 minutes         3000 texts

How Add-ons work.

How to buy.

Get an Add-on while topping up.

You can top-up using the Three app, with a card or voucher, or on our website. Just remember to convert your topped up credit to an Add-on after you've topped up!

The Three app.

The easiest way to buy Add-ons is through the Three app. You don't even need any data, just a network connection.

You can also use the app to track your usage, view your bills and find out when you can upgrade or change your plan.

Download the Three App on the App Store. Get the Three App on Google play.
Get the Three App on Google play.

Already topped-up?

You can also login to your My3 account to buy an Add-on. Just visit the link below to get started.

Login to My3.

PAYG Add-ons FAQs.

How long will my Add-on last?

How often can I buy an Add-on?

Can I increase my Personal Hotspot allowance with an Add-on?

How can I get more internet data?

How do I pay for an Add-on?

How can I buy an Add-on if I don't have data?

Can I buy the same Add-on more than once?

What if I can't log in to My3?

How does combining Add-ons work?

Is there anything Add-ons don't cover?