Open the Messaging app (set it as your default messaging app, if necessary), then tap the New message icon .
Enter the recipient(s) in the To box.
Tap the Contacts icon then select one or more entries from your Contacts list.
Enter a name (or a partial number or email address), then tap a suggestion displayed from your Contacts list.
Enter a number or email address manually.
Tap the text box, then enter your message.
Tap the Menu icon > Add subject to add a message subject. The subject text appears above the body text in bold letters.
Tap the Attachment icon to open a dialog box where you can choose the type of media file to attach to the message.
To delete an attachment, simply tap the Delete icon on the attached file.
Tap the Send MMS button to send the message.