Samsung SCH-I830MSASPR - Manual (Page 202)

194 Section 3A: Sprint PCS Service Features: The Basics
Text Messages
You can send text messages to and receive text messages
from other users who have SMS (Short Message Service)
capability. SMS Text messages, or SMS messaging, can be sent
from one device to another by addressing a message to the
recipient's phone number.
Creating and Sending a Text Message
To create and send a text message:
1. Tap the Start menu bar, and then tap Messaging.
2. Tap New.
3. Enter the name or phone number of the recipient(s) in
the To field. Use semicolons to separate numbers.
4. Tap the message area and enter a message using your
preferred method of input.
5. If you would like a delivery confirmation, tap Menu >
Message Options. Tap Request message delivery
notification and then tap
.
6. Tap Send to send the message.