Three wants to limit the chance for Vodafone and BT to gain more spectrum in the forthcoming 4G auctions with a campaign dubbed "Make the Air Fair".
The Make the Air Fair campaign, also backed by TalkTalk, CityFibre, Federation of Communication Services (FCS), Gamma and Relish, aims to tackle Vodafone and especially BT and EE's alleged "spectrum dominance".
Currently BT, through its ownership of EE, owns 42 per cent of available spectrum, while Vodafone has 29 per cent.
Three wants to ensure that no one operator can have more than 30 per cent of the market once the new spectrum is released, effectively suggesting neither firm should be allowed to bid for the new frequencies.
Ofcom has already said BT won't be allowed to bid for one half of the available services, but has not banned it from the second available services.
The coalition is calling for consumers to "join the fight" by tweeting and signing the Ofcom consultation for the spectrum auction and is hoping that a super-hero version of Ofcom CEO Sharon White (above) will persuade people to do so.
Dave Dyson, Three CEO, said: "The UK mobile market is broken at a critical time when it should be leading and not lagging almost all other developed countries. Ofcom must prove it is on the side of consumers and apply a 30 per cent cap on total spectrum ownership following next year's auction.
"Spectrum is a national asset that should benefit every citizen. If it’s all controlled by one or two massive businesses then you can't have effective competition and everyone loses out. This is the moment for the British public to stand up and fight for real choice and better mobile services."
FCS CEO Chris Pateman added: "In every other market, business people are used to having a choice of good services from a variety of suppliers.
"We owe it to government and business to deliver real choice and proper competition for the high-quality voice and data connections on which they rely to trade in the modern world," he said.
Three has been pushing for this cap for some time, though, and has made little headway, but it is clear hoping that using consumer power, something Ofcom, and in particular Sharon White, has always championed, it can change the planned proposals for the auctions next year.
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