BB Curve :: Symbols Are Showing As Black Squares?

I have the Blackberry Curve 9300, v5.0.0.846, bundle 1440, platform 6.3.0.39, and I noticed on BBM and on Twitter and such, that when people post some symbols or small different lettering and such, they show up as small black squares instead of what they actually posted. A friend of mine put in their BBM name "love" in a different type lettering, but all I could see was 4 small black squares. It wasn't until I looked at my friends phone, who has a bold, that I noticed it actually said something, whereas I thought my friend had actually put the small black squares. The black squares look a little something like this, except bigger and black: ▪▪