London Tube traveler will not be able to make & receive calls and surf the Web while in trains as plans to extend mobile hone coverage onto trains have been put on ice.

Four UK operators, viz. Everything Everywhere, O2, 3 and Vodafone, were working with Chinese provider Huawei to extend mobile phone coverage in time for the June 2012 Olympics, but talks ended abruptly.

It is said that installing antennas throughout the Tube’s antiquated network was proving too costly.

Raising several concerns, Huawei said, "Low ceiling heights, complex inter-connecting corridors and concourses, escalators and staircases, limits the choice of antennas and radiating power elements and in tunnels have to have adequate and uniform signal coverage."

Huawei denied accusations that its move was a result of it close link with the Chinese government and the People's Liberation Army.

The four operators assured that they, as a group, would keep on exploring other avenues to provide a service.

Plans to extend WiFi coverage on Tube station will go on as it is.

As many as 120 tube stations are in line to receive WiFi coverage by in time for the 2012 Olympics.