Vodafone's HD Voice launch leaves O2 customers as the odd ones out

Blog sponsored by Engadget.com 11.9.2014 Comments Off on Vodafone's HD Voice launch leaves O2 customers as the odd ones out

HD Voice technology isn’t particularly new — in fact, some UK operators have supported it since as far back as 2010. Very few devices were HD-capable back then, though, but lots of modern smartphones are now suitably equipped, leading other carriers…

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