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Ap ymchwil Ofcom i ffonau symudol
Historical Ofcom data from 2011 – 2013 showing fixed broadband, local and digital TV coverage, as well as information on mobile services and digital radio reception.
Mobile operational enquiries
Historical Ofcom data from 2011 – 2013 showing fixed broadband, local and digital TV coverage, as well as information on mobile services and digital radio reception.