Apple iPhone OS 3.1 - Manual (Page 86)

Messages
7
Sending and Receiving Messages
WARNING: For important information about driving safely, see the Important Product
Information Guide at www.apple.com/support/manuals/iphone.
Messages lets you exchange text messages with anyone using an SMS-capable phone.
Messages also supports MMS, so you can send photos, video clips (iPhone 3GS only),
contact information, and voice memos to other MMS-capable devices. You can enter
multiple addresses and send a message to several people at the same time.
Note: MMS is available only on iPhone 3G or later. SMS or MMS support may not be
available in all regions. Additional fees may apply for use of Messages. Contact your
carrier for complete information.
You can use Messages whenever you’re in range of the cellular network. If you can
make a call, you can send a message. Depending on your phone plan, you may be
charged for the messages you send or receive.
Send a message: Tap , then enter a phone number or name, or tap and choose a
contact from your contacts list. Tap the text field above the keyboard, type a message,
and tap Send.
The Messages icon on the Home screen shows the total number of unread messages
you have.
Number of
unread messages
86