HD Voice (high-definition voice) is the new audio technology that noticeably improves speech reproduction quality on the smartphone and largely eliminates background noise, particularly in a loud environment (such as train, street).

Hear the difference

Use these examples to hear the difference between HD Voice and conventional connection quality.

What are the benefits of HD Voice?

  • You can make phone calls even when in a loud environment and can still clearly understand the person you are talking to. The background noise is reduced to a minimum and thus allows for a relaxed conversation.
  • The feeling that you are talking face to face with the person at the other end is significantly increased.
  • Delicate issues can now also be discussed over the phone as the audio quality allows for the equally flawless transmission of quietly spoken or whispered words. You can talk quietly – without anyone listening in.

What are the requirements for HD Voice?

  • The people at both ends of the connection are customers of Swisscom (NATEL® subscription or NATEL® easy) and the entire call is conducted on Swisscom's 3G network.
  • Both people on the call have a NATEL® that supports HD Voice. You will find a selection of HD Voice enabled devices in the Swisscom Onlineshop or in any Swisscom Shop near you.
  • If the requirements for an HD Voice call are met (this is recognised automatically), then the call is transmitted in HD Voice.

Is HD Voice subject to a fee?

  • HD Voice is free of charge.
  • HD Voice is preinstalled and does not need to be activated by the customer.