As a part of the Universal Profile 3.1 update, RCS will gain better audio quality for voice messages and more.

The RCS Universal Profile 3.1 adds an “upgrade to audio messaging capabilities,” including support for the xHE-AAC audio codec that enables “highly efficient compression and decompression of shared ...

The new RCS Universal Profile 3.1 offers upgraded voice note support, thanks to the xHE-AAC codec. It also improves network ...