O2 online: top up credit and data online in 1mn!

Do you have an O2 sim card and you need a quick top-up for credit and data? Are you also looking for a phone deal? You can do all this using O2 online! 

In this article, you will see how to top-up your mobile online, what is the best way to reach the O2 online customer service, how you can create an O2 online account and how to top up an O2 phone. Enjoy! 

O2 Mobile (previously Cellnet) is the second largest telecommunications services provider in the UK, after EE. 

Officially formed in 1985 with headquarters in Slough, England, O2 was originally created as a joint venture between BT Group and Securidor. However, O2 was bought in 2006 and is now owned by the Telefonica group, a Spanish multinational telecommunications company. O2 UK is officially incorporated as Telefonica UK Ltd., however, the owner decided to keep the brand as O2. The company also has two subsidiaries: Giffgaff and 50% of Tesco Mobile. 

O2 has over 10.000 employees and owns over 450 retail stores across Great Britain and Northern Ireland. 

O2 has over 23 million satisfied customers, which makes it easy to understand why the brand is in the top 3 preferred telecommunications services. O2 runs 2G, 3G, 4G and 5G networks across the UK, as well as operating O2 Wifi. On top of that, O2 Mobile also provides mobile broadband services, Sim Only deals, phone contracts and more. 

Are you looking for a new phone? Well, look no further O2 online has the best phone deals you can find! Everything you need is just a couple of clicks. 

Here are a few details about the O2 mobile phone deals: 

Now that you have a new phone, you still need to top-up your sim card so you can use your device! You can do so by using O2 internet.  

Don’t forget you can also use Monisnap (ex Allo), for a quick top-up, easy and secure. 

There are two ways in which you can top-up your O2 mobile online: 

O2 online web top-up: 

O2 auto top-up: 

If you have not done so already, create your O2 online account and enjoy all the perks that come with it. See how you can login just below. 

Simplify your access to your O2 online account by logging into My O2. You can use My O2 from your browser or your phone app, available on Google Play and Apple Store. 

Using MY O2 is easy. In order to login, create an account by following these steps: 

Once you have followed these instructions, you will be able to log into your account using your email and password. With My O2, you can check your usage and remaining balance, set-up auto top-ups and manage your account. Login today! 

Do you want to reach O2 Customer Service online support? Unfortunately, O2 Mobile online does not provide an email address or an online form that you can use. 

However, you can contact O2 online by chat 

Don’t forget to check their Help page before reaching for Customer Service, you may find the answer there and save you a lot of time. 

You can also contact O2 online by phone. See how in the FAQ section below. 

Do you want to top up a friend’s phone number in just one minute? Use Monisnap (ex Allo)!  

You can purchase O2 top up card, mobile top-ups for call credit or mobile data at the exact same fares that you find on O2. 

Here’s how it works: 

As a bonus, for each top-up, mobile or data, you earn one loyalty star. Four stars equal one top-up with zero fees.

Use Monisnap (ex Allo): fast, easy and secure!