Here's how: Open your oppo phone, click on the game space first, and then click on the \"\" sign in the upper right corner to add the game to the game space.
Once in a game that supports voice chat, swipe in from the left side of the game screen to bring up the shortcut menu.
Then click on \"Game Change sound\" to freely select supported sound effects. So the voice changer on the OPPO phone can be turned on