Like other networks in the UK and abroad, we're switching off our 3G network so that we can focus on our faster, more reliable and more energy-efficient 4G and 5G networks.
Our full 3G switch off started in Durham on 2 April 2025 and will continue across the UK throughout the rest of the year. Up next will be Norwich, Telford and Guildford on 16 July, followed by Torquay on 4 August. Keep checking this page for guidance on how to get ready.
This page has all the information you'll need, but in a nutshell, if you don't have a phone with WiFi and 4G Calling capability you’ll need to upgrade your device soon.
Why we're switching off 3G
3G has been superseded by 4G and 5G networks over recent years, with the 3G network carrying less and less traffic.
By focusing our investment on 4G and 5G, we’ll be able to further expand and upgrade services, while being more energy efficient and better for the environment. Plus, it means you’ll be able to benefit from quicker download speeds and higher quality voice calls.
Check you're ready for the 3G switch off
Yes, there are a few steps you’ll need to take:
Check your device is compatible with WiFi and 4G Calling.
If you already have a compatible device, make sure you enable WiFi and 4G Calling so you have the best experience when we switch off 3G. You’ll find all the information you need on our WiFi and 4G Calling page
If you don’t have a Wifi and 4G Calling compatible device, you’ll need to change or upgrade your device. Sign in to My O2 for your upgrade options.
3G Switch off FAQs
Don’t worry, you don’t need to spend a fortune on a brand-new phone. We have a wide selection of lower cost phones to suit all budgets in our Like New range. Browse our range of refurbished devices.
If you find it difficult to access any of our services due to a disability or personal situation, we can make adjustments to help you manage your account.
Get more support:
If you’re an O2 customer, head to our Access for all page
If you’re a Virgin Media customer, visit our accessibility page
Talk to one of the team at your local store
Providing seamless connectivity for all our customers, wherever they live, is our priority. That’s why we’ve been working to bridge the digital divide between urban and rural communities over recent years.
The Shared Rural Network (SRN), for example, is a joint initiative between mobile network operators and the UK government to deliver reliable 4G coverage to rural parts of the UK – with the aim of reaching 95% of the UK. We’ve already boosted 4G in numerous locations across the UK as part of our commitment to the SRN, and this will continue in the months and years ahead.
Once you’ve enabled WiFi and 4G Calling on your device, you’ll be able to enjoy a range of benefits that come with them. And the best part is, there are no extra charges. Find out more about WiFi and 4G Calling
Yes, as these mobile providers use our network. Your provider will communicate with you directly with all the information you need.
No. Emergency services are a critical aspect of telecommunications infrastructure. All network operators take necessary measures to ensure their continuity.
No – we aren't switching off our 2G network. But we’ll be moving you away from our older 3G network to provide you with a better mobile experience. At the same time, we’ll be expanding our 4G and 5G coverage across the UK.
In the future, you'll need to make sure that you have a WiFi and 4G Calling compatible device to continue making calls, sending messages and using data.
You may be impacted if you use a mobile broadband device (WiFi dongle or pocket hotspot) with a device that requires a SIM, such as a smartwatch, iPad or other tablet. There are a few steps you’ll need to take to stay connected after the 3G switch off.
Next steps:
Check your device is compatible with WiFi and 4G Calling
If you already have a compatible device, make sure you enable WiFi and 4G Calling so you have the best experience when we switch off 3G. For more information, visit our WiFi and 4G Calling page
If you don’t have a Wifi and 4G Calling compatible device, you’ll need to change or upgrade your device. Get in touch and we can help you with your options.
No, upgrading your phone doesn't mean you need to change your number.
Yes you can.
If you’re already using an Apple device, you can upgrade to a newer Apple device. Use your Apple ID to access your Apple Mail and applications.
If you have an Android device, you can upgrade to a newer Android device
No – moving your data to a new device is quick and easy. There are online instructions available from both Apple (iOS)and Google (Android) for when you're moving to a device of the same type. You can even get help with moving from an Android device to iPhone, or moving from iPhone to an Android device. If you need more advice, just pop into an O2 store and someone will be happy to help.
It's your call. If you'd like to keep the tariff you're currently on, you can simply buy a new device outright. Alternatively, you can choose from our current range of tariffs – we're sure there'll be one to suit your needs and budget.
SIMs come in different sizes, so it's a possibility. If you need to swap your SIM, don't worry – it’s simple and quick, and you won't need to change your number. If you need help, visit an O2 store and someone will be happy to give you a hand.
Yes, we have phones with accessibility features to make life easier – take a look at our help page with advice on choosing an accessible device.
If you're on Pay As You Go, and your phone or SIM doesn’t support 4G Calling (VoLTE), you may lose the ability to make and receive calls once 3G is switched off in your area - even if you still have signal for texts and data.
To stay connected after the 3G switch off:
Make sure you're using a 4G or 5G compatible phone
Check that 4G Calling is enabled in your phone settings
Some older SIMs may need replacing to support these features. Please contact your local O2 store for support
4G & WiFi calling will be available for Pay As You Go customers by the end of 2025. To access it before then, you'll need to switch to Pay Monthly.
Please see our dedicated business page for further information.
Last updated: 03/06/2025
