I bought a white torch 9800 but I haven't received it yet. I keep seeing this other black dot on the phone screen (I know one is the led light) but what's the other one? Also, I haven't noticed it on any of the other colours (black red) I thought maybe it was just because of the white it was showing up, but a friend of mine has a black torch and after careful observation, there's only one dot (the led light)

Proximity sensor. Turns the screen off when you are talking with the phone close to your head.

ok thank you! but is it on all the colours?

yes.