Phone signal on trains not good enough most of the time, research says
Ofcom says mobile and train Wi-Fi service on British rail is usually too poor for normal use. Networks and local authorities are being urged to improve coverage and infrastructure.
Intelligence analysis by GPT-5.4 Mini
Ofcom says passengers on trains in Britain often cannot get enough signal for basic online tasks, even though its benchmark is modest. The regulator blames weak coverage, train design, outdated Wi-Fi, and slow local approvals for new infrastructure.
Britain’s trains are like moving rooms with bad phone reception. Ofcom says the signal is so weak that scrolling, video calls, and streaming often do not work, and even train Wi-Fi is mostly poor.
Analysis
What Ofcom found
Ofcom tested mobile signal quality on 24 sections of track across England, Scotland and Wales and concluded that train connectivity is not meeting basic needs most of the time. Its definition of “good performance” was low by modern standards: 5 Mbps download, 1.5 Mbps upload, and 50 ms response time. Even with that threshold, the networks missed it frequently.
Vodafone met the benchmark only 17% of the time. Three reached it 21% of the time, O2 20% of the time, and EE performed best at 42%. Ofcom said that for many passengers, boarding a train still means “going off grid.”
Why the signal is poor
The regulator said the main problems are weak mobile signal from phone masts near rail lines and carriage designs that make it harder for signals to get through. Train Wi-Fi was also judged very badly, performing well just 1% of the time. Ofcom criticised train companies for using outdated technology and throttling speeds too aggressively.
The policy fight
Mobile UK, which represents EE, Virgin Media O2 and VodafoneThree, said the rail network faces “unique structural and capacity challenges” and called for planning reform and investment. It also argued taxpayers should help fund some of the infrastructure needed to fill black spots, saying commercial rollout alone cannot solve the problem. Ofcom, by contrast, said networks and local authorities need to step up, noting that some councils have rejected more than nine in 10 applications for new or upgraded infrastructure in the past five years.
What could change
The Department for Transport says it plans to spend £57m on a project to improve train Wi-Fi, including the use of low-Earth satellites instead of relying only on 4G and 5G. Transport Secretary Heidi Alexander is expected to announce the plans this summer.
Key points
- Ofcom says mobile signal on British trains is usually too weak for normal online use.
- EE performed best in the testing, but still met the regulator's 'good performance' threshold only 42% of the time.
- Train Wi-Fi was described as especially poor, meeting the standard just 1% of the time.
- Ofcom blames weak mast coverage, carriage design, outdated Wi-Fi systems, and slow local approvals.
- The government plans to spend £57m on train Wi-Fi improvements, including low-Earth satellite connections.
If the planned investment and satellite-based connectivity move ahead, train Wi-Fi could become much more usable for passengers. Better coordination between mobile networks, rail operators, and local authorities could also reduce the dead zones that Ofcom says are common now.
If planning delays and funding gaps continue, the current patchwork of poor signal and slow train Wi-Fi may persist. The article also suggests that commercial rollout alone may not be enough, which means improvement could stall without public support and faster approvals.
