I can't send text messages
Depending on your wireless service plan, this feature might not be supported.
Try the following actions:
• Verify that your BlackBerry smartphone is connected to the wireless network. If you're not in a wireless coverage area,
your smartphone should send the messages when you return to a wireless coverage area.
• Verify that fixed dialing is turned off.
Turn on, turn off, or check the status of a network connection,