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VoLTE－Sony
Voice Service
Enjoy a FREE upgrade to VoLTE to experience voice call with speedy connection and video call with high quality!
Voice Service
Enjoy a FREE upgrade to VoLTE to experience voice call with speedy connection and video call with high quality!
Sony (Android 9)
 
Via handset Setting, select “Networks & Internet"
  Select "Mobile network"
       Select “Advanced"
  Turn on “Enable VoLTE”