To use the feature when it releases, users will be prompted to download approximately 150MB of additional app data. The feature will be enabled by default but in some cases, users might have to enable it.
When you enable the transcription option, you will receive a popup urging you to "Read before you listen with transcripts," indicating the availability of transcribed message content.
According to the report, the function is presently being tested and is only available to a restricted number of beta users. WhatsApp, on the other hand, plans to make the function available to more users in the near future.