Tap the Message+ icon .
If not available, navigate: Apps > Message+.
Tap the Pencil icon (located in the lower right).
From the To field, enter a 10-digit mobile number.
As the number is entered, a matching contact may appear and can be selected at any time.
Alternately, select the contacts icon (located on the right-side of the To field), select a contact, select the appropriate mobile number then select OK.
Repeat this step as necessary to add additional recipients.
If prompted, select an option.
Allows recipients to reply to all who received the same message.
Does not allow recipients to reply to all who received the same message.
From the Type a message field, enter a message.
To add an attachment, tap the Add icon + (located to the left of the message box).