What's the actual way to turn on voice chat in roblox?

also it's 13 and over only, so on a younger account verification won't unlock it. and check the device has given roblox mic permission - on windows and phones that's a system setting, roblox can't flip it for you.

is the account age verified? that's the gate. the voice option doesn't even show up until verification has gone through, so you can read every guide going and never find the toggle. once it's done it sits with the privacy and communication settings. the other thing is that not every experience has voice enabled, so you can have it switched on and still join a game and hear nothing at all - test in one you know supports it before you decide it failed.