Vodafone's improvements in the latest round of testing can in part be attributed to its network investments. Its recent deployment of 4G LTE carrier aggregation technology has helped improve its speeds and offer excellent reliability in UK towns and cities. Not only was Vodafone one of only two operators to record download speeds above 40 Mbps but also it led the way with the single fastest speed across all testing its 51.7 Mbps speed in Liverpool was the fastest recorded in the UK and would more than fast enough for those looking to stream the Premier League football or Ashes cricket this week onto their mobile.
Three's reputation for being consistent and dependable is reaffirmed in RootMetrics testing where it continues to provide users with outstanding call and data reliability in nearly every area tested. Its speed is also solid, although the operator has the smallest 4G LTE footprint of all operators. Three was on 4G LTE during at least 90% of tests in just 2 out of 16 metro areas, whereas all other operators were on 4G LTE at least 90% of the time in all 16 areas.
Although O2 fails to rank above third or fourth in any test category in metro testing, its reliability remains strong. It achieved Excellent data reliability for getting connected in 14 of 16 areas, giving consumers another alternative when deciding which operator to select. The operator is well known for offering a good customer experience and with additional investment in its technology in 2018, we expect to see O2's speeds improve in the next set of testing.
This latest report contains real-world mobile performance insights to offer consumers a completely independent view of each carrier's performance where they live, work and play.
Performance across the United Kingdom
EE users in England, Northern Ireland and Scotland will be pleased to hear that the operator won or shared the top spot in every test category. Its performance remains outstanding and the operator delivered the fastest aggregate median download speeds across the entire UK and within each of the four nations. O2's success is generally limited to Northern Ireland, where it ranks first for text performance in the country.
In Wales Three shared the spoils for network reliability and call performance whilst its performance across the UK remains steady despite it falling in the rankings. Vodafone, meanwhile, solidifies its position as a strong second place in home nation testing. It made considerable improvements at a home nation level, with fast speeds and improved performance in Wales.
A full breakdown of mobile network performance during the first half of 2019 at the national level can be found here.
5G promises much faster speeds in metro areas
Capacity can be stretched thin in major cities such as London, Edinburgh and Birmingham, with some spots performing better than others in these markets. While speed and reliability results look positive across UK towns and cities, the advancement of 5G will take mobile connectivity to another level.
RootMetrics has recently tested 5G performance in South Korea and the results from initial 5G deployments match the speeds we have read about for months - indicating good things to come when 5G fully launches in the UK.
The early testing shows signs that 5G will bring improved speeds and a much smoother data experience to users across the UK's towns and cities.
Kevin Hasley, Head of Product at RootMetrics by IHS Markit said
EE's continued dominance of our testing backed by Vodafone's improvements means there is healthy competition in the UK mobile operator market. Three and O2 have also performed well in specific categories, leaving a very competitive market.
5G is still in its infancy and the vast majority of the customer experience will remain on 4G networks for the foreseeable future. Operators have to balance the early stages of 5G deployments while continuing to improve 4G LTE performance. It will be interesting to see how operators differ in their approach to managing network changes.
We've already seen an indication of the future from our recent South Korea 5G tests and there is a real opportunity for operators to make a move in ensuring this technology can provide the capacity, low latency and fast speeds required to enable the Internet of Things and connect our world like never before.
You can find a full breakdown of mobile network performance during the first half of 2019 at the metro level here.
RootMetrics offers the most comprehensive testing of the UK's mobile network. Its team visited over 750 locations across the country and performed over 580,000 tests across the UK. In total, 19,238 miles were driven and 648 indoor locations were tested to offer the most accurate picture of mobile performance available. All tests were conducted using off-the-shelf Samsung Galaxy G9 smartphones purchased from operator stores.
For details on the RootMetrics by IHS Markit testing methodology, visit http//rootmetrics.com/en-GB/methodology