O2 Completes 3G Shutdown After 22 Years, Martin Lewis Warns Users

The UK’s largest mobile network, O2, is set to complete the shutdown of its 3G services, a process that has been ongoing for several months. This transition, which marks the end of a service that has operated for over two decades, will require customers still using 3G-only devices to upgrade to newer smartphones to maintain access to mobile data.

Money expert Martin Lewis addressed the implications of this significant change during a recent episode of The Martin Lewis Money Show Live on January 20, 2024. He warned viewers that while some customers might be able to retain their existing phones, they will no longer have internet access, and call quality is likely to decline.

Impacts of the 3G Shutdown

As O2 transitions away from 3G, customers who rely on older mobile devices will face challenges. During the show, a viewer named Alan raised concerns about his mother, who uses a basic mobile phone. He explained that she received a notification from O2 regarding the 3G shutdown, indicating she would need to upgrade to a 4G device. Alan expressed worry about her ability to navigate new technology, noting, “If she’s got no data, she can’t click links in scam texts.”

In response, Lewis reassured viewers about the situation: “I totally understand and yes, the 3G switch-off is imminent for everyone with very old phones. Most cases will see the 3G network go offline, which means no data or internet access. However, calls and texts will still be possible using the 2G network, although call quality may suffer.”

Lewis emphasized that customers on the Three network would not benefit from this option since Three does not support 2G. He suggested that certain mobile providers are offering upgrades to vulnerable customers, encouraging viewers to consider alternatives that suit their needs. “There are phones, like the Nokias, designed for users who need basic functionality without the complexities of a smartphone,” he added.

O2’s Transition Strategy

O2, which is now part of Virgin Media, provided an official statement on the shutdown. The company noted that “most of our 3G network has now been switched off across the UK, but some areas may still receive a 3G signal during the early part of 2026.” Customers using 3G-only devices must upgrade to compatible 4G or 5G devices before the complete shutdown occurs.

The decision to phase out 3G services aligns with the broader trend of mobile networks transitioning to faster, more efficient technologies. O2 explained that 3G has been largely superseded by 4G and 5G networks, which offer quicker download speeds and enhanced voice call quality. “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,” the statement read.

As the switch-off date approaches, customers are encouraged to evaluate their mobile devices and consider upgrading to ensure continued access to essential services. The change represents a significant step in the evolution of mobile technology in the UK, impacting millions of users who have relied on 3G for over two decades.