UK 4G speeds are more than twice as fast as 3G services, according to a new report from Ofcom, which also found that EE has the fastest 4G network and that Three has the slowest.
The Ofcom report, Measuring mobile broadband performance in the UK (PDF), examined data from 210,000 indoor and outdoor smartphone tests in five UK cities between March and June.
The results showed that the average 4G speed was 15.1Mbps, while the average 3G speed was 6.1Mbps.
Ofcom said the results prove that 4G offers a notable speed improvement and could help mobile phone owners make up their minds to move to 4G.
"Our results show that, on average, UK 4G networks perform much better than 3G networks," Ofcom said.
"These differences are consistent across all mobile operators, and we would expect consumers to notice material differences in the performance of mobile broadband when using any 4G network compared to a 3G network."
EE's network offers the top 4G speed based on the data, measuring an average of 18.4Mbps during the period, while O2's 4G network hit 15.6Mbps. Vodafone came third with average speeds of 14.3Mbps.
Three, however, didn't fare so well with a network average of just 10.7Mbps during the period.
It's a similar story when it comes to upload speeds. EE came in fastest with average speeds of 14.7Mbps, while Three is the slowest of the four networks with an average of 11.1Mbps.
There was a glimmer of hope for Three in the report, however. Ofcom noted that the network had the fastest 3G upload speed at 1.7Mbps.
This was 1.6Mbps for O2 and EE, and 1.5Mbps for Vodafone. However, Three didn't do well when it came to 3G download speeds, coming in at the bottom of the pack with an average of 5.2Mbps.
The data also showed that EE has the best coverage for its 3G and 4G services. O2 and Vodafone are third and fourth respectively, while Three does not have any location data for its 4G coverage. It does have 98 percent 3G coverage, though.
The findings come after a report earlier this month claiming that the average 4G speed in the UK had halved owing to a rise in customers moving to LTE services from operators.
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