EE and KC are blaming each other for the slow 4G mobile broadband speeds being experienced by consumers in Hull.
After a report found that average 4G speeds are just 6.5Mb in the East Yorkshire city - less than a third of those in Liverpool, at the other end of the M62 corridor - the two broadband providers are looking to apportion blame.
As reported by the Hull Daily Mail, mobile operators typically rent fixed-line Ethernet services to support their own 4G networks. Paying more for additional capacity can improve the speed of mobile broadband connections.
EE pointed out that 4G speeds are dependent on the quality of the broadband infrastructure in the ground, and in Hull, KC is the incumbent telecoms operator.
"Despite the poor quality of broadband, EE has the fastest 4G in the area and is faster than most fixed broadband available in people's houses," a spokesperson stated.
"We are also investing in our own pipes in the ground to make sure the service in Hull gets better and isn't left behind because of KC's dominance of the market."
However, KCom Group - the parent company of KC - dismissed EE's argument, claiming its broadband network plays no part in determining 4G mobile speeds.
Sean Royce, KCom Group's Managing Director of Technology, Service and Operations, claimed that EE's 4G speeds have nothing to do with KC's broadband infrastructure.
"The network capacity available to mobile providers and other third parties in Hull is more than capable of handling the levels of data usage EE is experiencing," he stated.
Mr Royce added that, in the vast majority of cases, fixed-line broadband delivers the fastest download speeds available.
He said KC's ongoing investment in fibre-optic broadband is giving households and businesses in Hull and East Yorkshire "not just ultra-fast, but also guaranteed speeds".