Samsung SCH-R400ZPAMTR - Manual (Page 49)

Entering Text 49
Entering Symbols
5. Use the Left and Right Soft Keys to page through the other symbols, if
desired.
6. Press the key that corresponds with the symbol that you wish to enter. For
example, press
for an exclamation point (!).
7. Repeat steps 3 through 6 to insert as many symbols into your message as
desired.