To get voice chat (VC) on Roblox Mobile, open the Roblox app on your iPhone or Android phone. Make sure you are logged into your account.
Next, tap the three dots with a circle around them in the bottom right corner to open the menu. Select “Settings” from the options.
In the settings, go to “Account Info” and check if your birthday is set correctly. If your age is not verified, provide a valid government-issued ID to prove you are 13 years or older.
Then, go back to the settings and select “Privacy.” Scroll down to find the “Enable Voice Chat” or “Chat Features” option and toggle it on.
Finally, when you enter a game that supports voice chat, allow Roblox to use your microphone. This will enable you to use voice chat in the game.