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Largest online store for payment cards

Certified reseller

Safe & secure payment

Instant digital delivery

Largest online store for payment cards

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Save 10% in the appEnjoy a discount on your first app order

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Instant digital delivery
Safe & secure payment
Certified reseller

O2 Top Up

Certified reseller

Instant digital delivery
Safe & secure payment

Save 10% in the appEnjoy a discount on your first app order

O2 Top Up

O2 is the UK’s largest mobile network provider, running its own infrastructure. If you want to stay flexible, you get one of our O2 top ups and add credit on the go. Should your needs grow, you can always get more, anytime, from anywhere.

O2’s flexibility and excellent coverage make it a smart choice for anyone looking to get the best connectivity on a budget. It’s also useful for students or temporary UK residents who want to stay connected without signing a long-term contract. Get your O2 top up now!

O2 top up benefits:

Flexibility: Choose the amount that better suits your needs
O2 rewards: For prepaid users, you can get up to 10% of your top-up credit back in the form of minutes, text, or data allowances.
Reliable coverage: O2 runs on its own network, giving you strong, consistent service.
EU roaming included: All O2 plans include free EU roaming.
Easy top-ups: You can easily get a new O2 top up online from the comfort of your home.

What can you use an O2 top up for?

O2 is great for affordable calling, texting, and mobile data use. You can use your O2 credit both in the UK and internationally. All plans include free EU roaming to make your travels hassle-free.

Because of its flexibility and extra rewards, an O2 top up can be used as an excellent tool to manage your monthly budget, without compromising your connectivity.

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By using this service, you consent to the of O2 Top Up.

Frequently Asked Questions

To redeem your O2 top up, just follow these steps:

Select a top-up amount above
Fill in your email address (this is where you’ll receive your top-up code)
Select a payment method, you can choose from debit card, Klarna, GooglePay, or PayPal.
Payment complete? Check your inbox to get your top-up code`
After receiving your code dial 4444 from your O2 phone and follow the instructions.

The easiest and fastest way to top up O2 is online, at mobiletopup.co.uk. Other places to buy an O2 voucher also include multiple physical shops around the UK.

Yes! To buy an O2 top up for family or friends with Mobiletopup, you just need to enter their email instead of yours. That way they’ll get the O2 credut code directly in their inbox, nice and easy.

Yes! You can buy an O2 top up credit from anywhere thanks to Mobiletopup.co.uk. Just make sure it’s for an O2 UK SIM since top-ups won’t work with SIM cards from other countries.

Simply dial 4444 from your O2 phone, or enter *#10# and press the call button.

Simply, a phone using a prepaid SIM card from O2. You can top it up anytime you need to. Simply buy an O2 voucher and you’ll be ready to call or text.

You can buy an O2 voucher and start browsing right away. All O2 prepaid plans contain a mobile data allowance.

If you’re having trouble connecting to the internet with your device, you may need to manually install the O2 APN settings. Depending on your mobile phone, the process to follow may differ. You will find the most relevant instructions to set up your O2 data on the O2 help page.

Trusted by thousands of customers on Trustpilot

byNelly Povanhu

2 hours ago

5 years and never as issue .5 years and never as issue .

bycustomer

4 hours ago

Very quick great serviceVery quick great service

byDoreen Aspro

9 hours ago

Great appGreat app Love the value of the app, and great service

byAlice

12 hours ago

Fast and reliableFast and reliable

Trusted by thousands of customers on Trustpilot

At Mobiletopup.co.uk it's not only possible to top up phone credit for several providers within 30 seconds, you can also purchase game vouchers and entertainment vouchers. The checkout process is safe and reliable.

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