EE Rolls Out Enhanced HD Voice Calling to iPhone 8 Users, With Others to Follow

Better quality voice calls for everyone. As long as you and your recipient have iPhone 8s, of course.

from gizmodo http://www.gizmodo.co.uk/2017/09/ee-rolls-out-enhanced-hd-voice-calling-to-iphone-8-users-with-others-to-follow/