Creating an SMS text message on a BlackBerry:
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To create an SMS Message, go to the text message icon (for SMS and MMS) on the home screen - it looks like a cell phone;
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Click the BlackBerry button - 
- and a long list of options will pop up, including Compose Email, Compose PIN, Compose SMS Text;
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Select Compose SMS Text and just type 20222 in the To: field instead of selecting a contact;
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Then type the keyword, 210, in the message field;
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Click Send and it should go through, but...
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Make sure you respond YES when prompted to complete the charge!
All BlackBerrys have the Compose SMS Text option, so you just need to locate it in that list. If you are still having trouble, visit the BlackBerry support site here.