Mobile HD voice services have now been commercially launched by 100 mobile operators in 71 countries, according to latest figures from the Global mobile Suppliers Association (GSA). Eight operators have activated HD voice service so far in 2014, with mobile users being introduced for the first time to HD voice calling this month in Morocco, Oman and Sweden. The number of mobile operators offering HD voice is over 31 per cent higher than a year ago. Around 329 HD voice phones have been announced by 19 manufacturers. Most operate on 3G/HSPA networks, with some working on GSM networks. Several VoLTE devices that also incorporate W-AMR functionality for HD voice are also included. Release