Ofcom has begun a four-month long study into mobile broadband speeds in the UK.
Epitro said it will test mobile broadband speeds using laptops that remain in one place, as well as those used on-the-go.
"Actual speeds delivered via mobile networks are typically well below the 'up to' speeds which are advertised," Ofcom told ZDNet.
"Satisfaction levels with mobile broadband performance also seem significantly below satisfaction with other [broadband] services."
Last year, a study by Epitro, revealed, on average, mobile broadband users receive speeds of less than 1Mbps, that's just 24 percent of the average advertised download speed.
The results of Ofcom's study are expected to be published early next year.