Open the Messaging app (set it as your
default messaging app, if necessary), then tap the New
message icon (at the top right of the screen).
Enter the recipient(s) in the To field.
Tap the Contacts icon (to the right of the To field), then select one or more entries
from your Contacts list.
Enter a name, number, or email address, then select a suggestion from your Contacts list (displayed below the To field).
Enter a number or email address manually.
Tap the text field, then enter your message.
Tap the Menu icon (at the upper-right corner of
the screen) > Add subject to add a message
subject.
The subject text appears above the body text in bold letters.
Tap the Attach 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 (on the right side of the screen) to send the message.