Online Since 1999 Site Secure

Mobile Phone and SIM Top-Up

Online/Web Top-Up

You can top-up your Three phone online with a basic top-up with low rates, or convert your credit into a great value Pay As You Go pack which offers a bundle of minutes, texts, and data that lasts for 30 or 90 days. Top-ups can be done online with a debit or credit card, or alternatively using a voucher.

PlanRatesBuy Now
Basic top-up

35p a min

15p a text

10p a MB

Top Up >
Basic top-up
PriceAllowances 
£10 pack

15GB data

Unlimited mins

Unlimited texts

Top Up >
£13.50 pack

100GB data

Unlimited mins

Unlimited texts

£18 pack

200GB data

Unlimited mins

Unlimited texts

£31.50 pack

Unlimited data

Unlimited mins

Unlimited texts

£90 pack

(lasts for 90 days)

Unlimited data

Unlimited mins

Unlimited texts

PAYG packs (last for 30 days)

All minutes, text and data packs can be used in 71 destinations at no extra cost with Go Roam. However, when roaming abroad there is a fair usage policy of 12GB of data per month.

For even better value you might want to consider a Pay Monthly SIM plan. These are available on 1-month, 12-month, and  24-month durations.

Are there any other ways to top-up?

Yes, there are a number of alternatives for topping-up on Three.

  • Three App – Download the Three app from the App Store or Google Play
  • My3 Account – Login to your My3 Account to top-up using a voucher or debit/credit card
  • Phone – Dial 444 from a Three phone to top-up using a voucher or debit/credit card (registered first on My3)
  • Top-up for someone else – Do an anonymous top-up for someone else here

Mobile Broadband Top-Up

Top-up your mobile broadband dongle, MiFi device or tablet online with a basic top-up and pay for the data you use. Or choose a great value PAYG add-on with a bundle of data that lasts for 30 days. Top-up online can be done with a debit or credit card, or using a voucher.

BundlePrice 
Basic Top-Up£5 minimumTop Up >
15GB data bundle£10
100GB data bundle£13.50
200GB data bundle£18
Unlimited data bundle£31.50
Mobile Broadband Top-Up

When you buy any mobile broadband bundle you also benefit from Go Roam, enabling your data to be used in 71 destinations.

FAQs

How do I find my Three phone number?

There are a number of ways to find your mobile number

  • On Android phones you can find your number in the following location: Settings > ‘About Phone’ or ‘About Device’ > ‘Status’ or ‘Phone identity’
  • On iPhones you can find your number in the following location: Settings > Phone
  • For mobile broadband devices the process can vary. Three directs you to its device support page. From there find your device and click ‘Finding out your number’.

What are PAYG packs and add-ons?

Packs are an enhanced version of Pay As You Go designed to offer better value for your money. Instead of simply using your credit to pay for usage you get a bundle of minutes, texts and data to use within 30 days.

In addition to the packs listed above there are also a number of add-ons available:

  • Unlimited data boost for £20 which lasts for 14 days
  • Unlimited data boost for £8 which lasts for 1 day
  • 10GB data boost for £12 which lasts for 30 days
  • 6GB data boost for £8 which lasts for 30 days
  • 3GB data boost for £5 which lasts for 30 days

Can I have both a pack and an add-on active?

Yes, you can combine a PAYG data pack (which gives you a monthly allowance of minutes, texts, and data) with one of the data add-ons above. So if for example you have a 15GB data pack and a 1-day unlimited data add-on, you’ll get unlimited data for that one day, and then revert to your 15GB allowance for the rest of the month.

Will a pack or add-on be used before any credit?

Yes, if you have both a pack or add-on and some ordinary credit, the allowances from the pack or add-on will be used first.

What don’t packs cover?

Packs don’t cover you making an international call, using your allowances abroad outside of Go Roam locations, using a text message shortcode service or calling a special number.

What happens when I use up my pack?

Once you use up the data in a pack you’ll pay Three’s standard rates until the pack refreshes. Or you can buy a data add-on.

Can I top-up abroad?

Yes, although Three recommends doing so before you leave if possible. If you do need to top-up when abroad you’ll need to use a debit or credit card, as you won’t be able to buy a voucher. And remember, packs only work in Go Roam locations.

Troubleshooting

Trouble topping up? If you’re using a credit or debit card make sure it’s registered at the same address as you’re registered at Three with, that it hasn’t expired, and that you’ve entered the security code correctly. Also, be sure you’ve got at least £10 in your account.

Issues with vouchers? Double check you’ve entered the correct voucher number and if all else fails turn your device off and on again.

No credit in your account? If you’ve topped up but can’t see the credit, wait an hour just in case there’s a delay. Or try turning your device off and on again.

Still no luck? If none of the above has helped you can always give Three a call on 333 from your Three phone for assistance.

View Pay As You Go Price Plan Guide >


The information contained on this website has been written to assist our readers. We do not represent Three or speak on its behalf and are entirely independent of Three.

Newsletter

Be the first to hear about the latest devices and get news of breaking deals before anyone else.