Guy,HERE IS HOW TO ADD SYMBOLS,YOU CAN TRY IT:
1) Go to settings -> general -> keyboard -> international keyboards.
2) Activate the japanese keyboard regardless of whether u speak japanese.
3) Open text box in SMS/EMAIL/Safari whatever.
4) Press the globe button until it switches to japanese (kana not qwert) keyboard.
5) On the left hand side press the second button from the bottom that says abc until it switches to *123.
6) Your keyboard should now have symbols on it.