I have a issue with this phone...hd voice during a call isn't working...tested on calls to xperia x...both phones in 4g coverage (with other phones the same). The internet settings from the network operator are not for this phone (they don't have it yet). It's a problem with those settings ore a hardware problem?
i have the same problem also on xperia x compact and vodafone ukraine (have also changed simcard). seems like problem is with hd voice, is there a possibility to disable hd voice on my phone? have searched all the setting, but have not found.
