Mars 2020 —

O2 Top-up Online – O2 Mobile: top up credit and data in 1mn!

You have an O2 Pay As You Go mobile phone and you've run out of credit? Are you trying to top up a family member's or a friend's O2 phone?Are you wondering what's your best call is? If this is the case, you're in the rigne place! This article shall let you know of all the available options for O2 top-ups. We shall go through both online and offline top-up solutions such as adding credit via O2's website, setting automatic or recurring top-ups for your O2 phone, topping up by phone as well as using O2 Top-up vouchers. Then, you shall be introduced to Allo by Monisnap. Allo by Monisnap allows you to top up your or another person's O2 phone in less than one minute at the best rate there is online.

O2 top-up

Logo of O2
O2 top-up

O2 is the international brand used by the global telecommunications group Telefónica in the United Kingdom, in Germany and in Spain. In the UK, O2 is the second largest mobile network operator. It gathers more than 26 million customers. Just like its main competitors, O2 offers its clients both monthly and Top-up / Pay As You Go plans. The latter implies that the customer needs to top up the balance on his/her account each time he/she runs out of credit.

How can I top up my O2 phone?

Picture of a man trying to top up his mobile phone on O2

O2 offers its customers several options to top up their phones . They can top up:

  • Online with their credit card
  • By phone
  • Automatically or recurringly
  • Via Top-up vouchers

How can I top up online with O2?

O2 allows you to top up your phone credit online either via single payments or automatic or recurring payments.

To do so, go to O2's UK website. Then, hover your mouse on the Shop section of the main top menu and click on Top-Up. In case you're browsing from a mobile device, open the main menu by clicking on the down arrow next to the O2 logo. Then open the Shop section and select Top-Up.

You should see these three options:

On O2's website, you can either make single top-ups, recurrent top-ups or data top-ups

Web top-up

Once you reached the Top-Up page, click on Web top-up. Enter your phone number, choose an amount between £10 and £30 and enter your credit card details. You may also enter your email address if you wish to get a top-up receipt from O2.

Setting automatic or recurring payments

To set up automatic or recurring payments, click on Auto top-up from the Top-Up page. You'll then be asked to log in to your My O2 account or to register a new account. Once you're signed in, click on My O2 and select Auto top-up from the options. You can choose to top up your account automatically when your credit balance is reaching a certain amount, or to top up recurringly weekly or monthly.

Data top-up

To top up your mobile broadband credit balance, click on Data top-up. Register an account or sign in to your already existing one. Then, pick up the data plan that best suits your needs.

NB. Data top-ups last a month, unless you run out of credit. You also can set them up recurringly.

O2 pay as you go top up

O2 also allows you to top up your phone via two offline options. You may either top up your O2 mobile phone by phone call or Top-up vouchers.

Phone top-up

To top up your account via phone, you first need to prepare your credit or debit card. Then call 4444 from your O2 mobile phone or 08456 062 277 from any other phone. Follow the instructions given to you.

NB. Your credit card must be issued by a UK bank and has to be linked to a UK address. The minimum amount you can add is £10.

Top-up vouchers

O2 Top up online

You can buy top-up vouchers in any O2 store or from any store bearing the green top-up logo. Just ask for an O2 top-up voucher. Then, call 4444 from your O2 mobile phone, or 08456 062 277. You'll have to enter the number on your receipt.

How do I check my O2 credit balance?

You can check your O2 credit balance several ways:

  • Long-pressing the hotkey 2 on your O2 mobile phone
  • Calling 4444 from your O2 mobile phone
  • Typing *#10# and pressing call on your O2 mobile phone
  • Signing in to your My O2 account on O2's website
  • Logging in to the O2 android or iOS app

O2 UK top up: the best offers

Allo by Monisnap allows you to seamlessly top up your O2 mobile phone in less than one minute. Not only do we have the best fares, but we also have a loyalty program which entitles you with a free-of-charge top-up every 4 purchase you make!

O2 top up 15 pounds

To add credit to your O2 phone with Allo by Monisnap, simply follow these 5 steps:

  1. Click on this link.
  2. Type in your country and your phone number.
  3. Select the voucher with the desired amount.
  4. Register a new account or log in to your already existing one.
  5. Pay for your top-up.

Your account should now be topped up!

How can I top up someone else's phone?

There are several ways you can top up a friend's or a family member's O2 mobile phone. You can do so by following the instructions given above for topping up on O2's website or via phone. All you have to do is to enter the person's phone number when you're asked to.

Alternately, Allo by Monisnap enables you to top up someone else's O2 phone. To do that, just follow the instructions given above for topping up via Allo by Monisnap and enter the number of the person whose phone you want to top up. It'll only take a minute!

O2: top up in 1mn with Allo by Monisnap

You need to top up your O2 mobile?

Allo by Monisnap allows you add credit to your O2 account online

Free-of-charge top-up every 4 purchases!

📱 What's O2?

O2 is one of UK's leading mobile network operators and internet service providers. It has more than 26 million mobile phone customers in the UK.

👨‍🏫 How can I top up my O2 mobile?

You can top up your O2 phone several ways:


  • Online with your credit card

  • By phone

  • Automatically or recurringly

  • Via Top-up vouchers

💻 How can I top up my O2 phone with Allo by Monisnap?

Topping up your O2 phone with Allo by Monisnap is fast and simple. You just have to:


  1. Go the Monisnap website

  2. Enter your country and your phone number.

  3. Pick the voucher with the amount that best suits your needs.

  4. Register a new account or log in to your already existing one.

  5. Pay for your voucher.

👨‍👨‍👦‍👦 How to top up a friend's or a family member's phone with Allo by Monisnap?

Just follow the five steps listed in the previous question and enter the person's phone number instead of yours.

Yannis Rahal


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