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O2 Top Up

Get your O2 top up online from mobiletopup.co.uk. We’re always open and you’ll have your new O2 top up within 30 seconds. If you’re using an O2 pay as you go mobile, you probably dread the feeling of running low on call credit with no shop in sight. You don’t have to feel this way anymore.

To get started, pick the amount of O2 call credit or mobile data you want. Then pay with your preferred payment method. Choose between PayPal, Maestro, Discover, Mastercard, Diners, Visa, or China UnionPay. Payment completed? Your O2 top up code will show directly on your screen. You’ll also receive it by email within 30 seconds. Welcome to the fast, safe and simple way to stay connected.
Frequently Asked Questions
Once you have your O2 top up voucher from mobiletopup.co.uk, here’s how you finalise your O2 pay as you go top up:

  • From your O2 mobile, call the O2 top up number 4444.
  • From a landline, call 08456 062 277.

In either of these cases, simply follow the spoken instructions. When prompted, enter the O2 top up code we sent you.
You can buy any mobile top up product on Mobiletopup.co.uk with PayPal. That means also O2 Top Up. All you need to do is decide how much O2 call credit or mobile data you want. And then select PayPal as your payment method during checkout.
If you want to check if your O2 top up was successful, you have several options to see your current balance.

Check your O2 balance from your O2 mobile:
  1. Dial hotkey 2. Your O2 balance will appear on your screen.
  2. Enter *#10# and press the call button. Your O2 pay as you go balance will appear on your screen.
  3. Dial 4444 to hear your balance on your phone.

Check your O2 balance from a different phone or device:

If you have a My O2 account, you can sign in to it from any phone or computer to check your O2 balance. You don’t even need your SIM with you.

No existing My O2 account? In this case, insert your O2 SIM into any phone. Turn your Wi-Fi off and go to the My O2 website. There you’ll see your O2 balance without needing to sign in. Visiting the My O2 website doesn’t incur data charges.
An O2 top up voucher will expire after 12 months if you don’t activate it. Once activated, your O2 call credit doesn’t expire as long as your O2 SIM card is active. To keep it active, make at least one chargeable activity (e.g. a call, a text or mobile data usage) every 6 months. Otherwise, O2 UK will deactivate your SIM card. This will also result in losing any call credit remaining on it.
There are two options to activate your O2 top up voucher from abroad.
  1. Call 4444 from the mobile phone you want to top up.
  2. Enter *111*# followed by the call button. Then, follow the instructions. When prompted, enter the top up code we sent you.
By Phone:
  • From your O2 mobile, dial 4445.
  • From another phone, dial 0344 8090222.
  • From abroad, dial +44 7860 980 202.

To chat with an O2 customer service specialist, visit the O2 customer service page and scroll to the bottom.
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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. After a successful payment, you will immediately receive an email or text containing your voucher code.
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