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VoLTE－Samsung
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!
Samsung (Android 10)
 
Via handset Setting, select “Connections"
  Select "Mobile networks"
  Turn on “VoLTE calls SIM 1”