O2 has announced it will begin shutting down its 3G network in April, a move that will affect customers on Tesco Mobile, Giffgaff, and Sky Mobile, which rely on O2’s infrastructure. As reported by The Sun, the switch-off will start in Durham on April 2, before expanding nationwide in the coming months.
This change is part of a government-backed industry overhaul that has already seen EE, Vodafone, and Three phase out their 3G services in favour of faster, more reliable 4G and 5G networks. While most modern smartphones will not be affected, customers using older 3G-only devices may find themselves unable to access mobile data, browse the internet, or use apps like WhatsApp unless they upgrade.
Why Is O2 Shutting Down 3G?
The decision to phase out 3G services comes as mobile networks shift their focus to expanding and improving 4G and 5G coverage. O2 has confirmed that less than 3% of network data usage currently runs on 3G, making the service increasingly obsolete. By reallocating resources, O2 aims to provide stronger, faster, and more efficient connectivity for its customers.
Jeanie York, O2’s Chief Technology Officer, explained the reasoning behind the shutdown, stating:
“Switching off 3G will be an important milestone in the evolution of our network, enabling us to focus our attention and investment on faster and more reliable 4G and 5G networks that will deliver improved services for our customers.”
The company insists that the move will ultimately benefit users, as they will experience better call quality, faster internet speeds, and stronger signal coverage. However, customers still relying on 3G-only phones will need to take action to avoid losing access to mobile data services.
Who Will Be Affected by the 3G Shutdown?
O2 has assured customers that only a small proportion of users will be impacted by the switch-off, particularly those using older phones that do not support 4G or 5G. While most smartphones purchased in the last 10 years are compatible with newer network technology, some people—especially elderly users or those who rarely upgrade their devices—may still be reliant on 3G.
If you are using a 3G-only phone, you will no longer be able to access:
- Mobile internet browsing
- Messaging apps like WhatsApp and Facebook Messenger
- Email services when outside of Wi-Fi zones
However, users with 3G-only devices will still be able to make calls and send texts using O2’s 2G network, which is remaining operational for now.
How to Check If Your Phone Will Be Affected
If you are unsure whether your device is compatible with 4G or 5G, you can check by going into your phone’s settings and searching for Network Mode or Preferred Network. If you see 4G or 5G listed as an option, your phone is compatible, and you won’t be affected by the 3G shutdown.
However, if your phone only shows 3G, you will need to upgrade your device to continue using mobile data services once the shutdown begins.
What Can Customers Do to Avoid Losing Service?
To ensure a smooth transition, O2 has proactively contacted customers most at risk of losing service, offering them free or discounted upgrades to a 4G-compatible device. Vulnerable customers—such as elderly users or those with accessibility needs—are being prioritised for a free upgrade, while other affected users have been offered discounted handsets to make the switch more affordable.
For those still unsure about their options, O2 recommends:
- Checking their device compatibility using the method outlined above.
- Upgrading to a 4G or 5G-compatible phone before the shutdown date to avoid disruptions.
- Contacting O2 customer support for assistance if they are unsure about their options.
