Before you can enable voice chat in Roblox, you need to ensure that you have verified your age. The developers have put a lower limit on the age, so unless you are above eighteen years of age, you ...

Roblox allows players to communicate with each other using various means. While text messages are the most common way to do so, some players prefer to use the voice chat.

Voice chat arrives in Roblox - here's everything you need to know about Spatial Voice.

The safe chat feature can be turned off by parent’s email address. The article further discusses how to turn off safe chat and how to enable safe chat if players are under 13.