Zain Bahrain announced its launch of HD voice via Twitter today, March 31, 2014.
Calls are “free of charge” on its new network, according to the tweet. No other details were available, but presumably users to be “on net” and have an HD voice capable phone.
Zain has a commercial presence in 8 countries across the Middle East. No information if or when the company will be able to exchange HD voice calls with other carriers in the region. It is a 50 percent owner of Inwi in Morocco, so subsidiary call exchange is likely to happen soon.