Maps
"“We want better quality information on mobile coverage made available to consumers, so that they can make an informed choice. That's why each MNO has agreed it will also provide data to Ofcom to enable it to publish an interactive online map, which will allow consumers to check where coverage is available and report to Ofcom areas of poor coverage. We want to focus on the quality of consumer experience and are keen to see Ofcom press ahead with this work.”"
I thought the MNO's already have coverage maps.
Usual 'bung in yer postcode' sort of thing.
Look at maps - informed choice.