SIM Only Deals – o2
Compare monthly plans & prices on SIM Only for the o2 network. Find the cheapest contract deal today.
Today's top o2 SIM Only deals:
Sorry! No SIM Only deals found for those filters.
Find out more about o2
Find out more about the o2 network including plans, reviews, history and more.
o2 is one of the UK's most well known networks. It has decent coverage and plenty of offers including Sim Only. Here we take a look at the positives and negatives of o2 and to see if it's a good fit for you.
o2 (owned by Telefónica) is one of the UK's award-winning network operators. Since 2002, the mobile communications provider has been offering high-speed mobile and landline products as well as innovative additional services that are known above all for their flexibility and high quality at affordable prices.
What tariffs can I get with o2?
Taking a look at the o2 website here https://www.o2.co.uk/shop/all-tariffs , for the latest updated prices. These change fairly often so it's better to check the o2 website direct.
What about o2 Refresh?
o2 proved to be an innovative provider early on. From the outset, the provider relied on the cost-effective combination of landline and mobile communications. o2 is a core brand of Telefónica, which was merged with E-Plus in 2014. Since then, around 27 million Britons have used this network, making o2 the largest mobile phone provider in the UK for a time.
For you as a customer, this is particularly noticeable in the first-class surfing speed. If you are satisfied with your contract with o2 and you extend it after the minimum term has expired, you will also be rewarded with further advantages from the network operator and a new mobile phone is also conceivable at any time.
Whether an improved data volume, higher speeds in terms of data transmission with the mobile phone contracts from o2 you are always well equipped for everyday digital life. Furthermore, you can enjoy the power of two networks at the same time as o2 are also present in Germany. But you can use your o2 SIM anywhere with roaming. With national roaming, your smartphone can automatically detect and select the better network.
Whether in the country or in the city - you rely on o2 tariffs for your mobile phone contract, surf, text and make calls from anywhere quickly and without connection problems.
History of o2
E-Plus and Telefónica E-Plus was founded in 1992 and received its mobile communications license in 1993. In 1997, E-Plus was the first company to offer prepaid tariffs, in which the customer pays in advance instead of at the end of a billing period, meaning they simply top up their credit over and over again
In July 2013 it was announced that the network operator E-Plus was acquired by the Spanish group Telefónica S.A. for a whopping £8.8 billion. On October 1, 2014, the takeover of E-Plus by Telefónica Germany was completed. E-Plus would then be dissolved as a brand in the long term. Telefónica is best known in the UK for its o2 brand, to be honest it's pretty much unknown for anything else, despite being one of the largest Spanish telecoms companies.
Now ready: 5G
In addition to the 2G standard, it offers the modern 4G/LTE and 5G standards, so you can surf the web quickly at all times. If you would like to opt for the o2 network, you can check the network coverage here. 5G tariffs at o2 network expansion is growing: the new 5G network standard has also arrived in the UK. And so o2 has also been using the latest mobile communications standard since 2020, which ensures significantly faster speeds.
Can I get 5G on o2?
Yes, you can! The 5G network has many advantages - for you and your 5G-enabled mobile tablet or phone. Mobile phone users in particular are looking forward to even faster and more stable data transmission. In the 5G network you can surf and stream almost in real time. You are curious? Then get the best 5G tariffs with a top 5G-capable smartphone here! The advantages and special features of the o2 tariff world The o2 offers could not be more diverse.
At o2 (Telefónica) you will find numerous individual and innovative contract options that can be adjusted according to your preferred needs. The variety of products is reflected in all-net flat rates and surfing options, which can be expressed both in basic tariffs and in all-inclusive contracts. o2 (Telefónica) tariffs come in all shapes and sizes - there is something for every user. o2 mobile phone contracts are not only known for their flexibility, but also for their extensive services.
o2 'Free' tariffs
The o2 Free tariffs stand for good prices with superior network performance and enable uncomplicated and inexpensive surfing and telephoning with gigantic data volumes. You can choose from: o2 Free-S o2 Free-M o2 Free-L All free package sizes come with an Internet, Allnet and SMS flat rate. In addition, with a cell phone contract with a free mobile phone tariff, you always surf the net at high speed and don't pay any extra for calling and texting in all networks. o2 Free Unlimited
The o2 Free Unlimited tariffs even go a step further: With these tariffs you not only surf the web quickly, but above all with unlimited data volume – the price stays the same (excluding inflation/CPI increases).