Lowercase and Uppercase Letters
To enter lowercase letters press the appropriate letter key. To enter uppercase letters hold down the Shift key, and then press the desired letter key like you do on your computer keyboard. Alternatively, you can press and release the Shift key and then press the desired letter. Only this next letter will be capitalized.
Numbers, Punctuation, and Symbols
The number keys are located at the top of the keyboard. Some symbols and punctuation marks are also provided as keys on
the keyboard. If you need a punctuation mark or a symbol that is not shown, press the SYM key 
on the bottom row of the keyboard. You will see a menu of punctuation marks and symbols. Use the select wheel to choose the character you desire and it will appear in your text entry box.
Tip: When you are entering text, you will see additional alternate keys shown at the top of the text box to help you enter common symbols and edit your message.
These helpers work in conjunction with the ALT key 
to quickly enter the desired symbol or move the cursor in your text. Hold down the ALT key and press the number corresponding to the symbol you would like to enter as shown at the top of the text box.