On the Messaging screen, touch New message.
Enter a mobile phone number in the To field.
As you enter the mobile phone number, matching contacts appear. You can touch a suggested recipient or continue entering the phone number.
Touch the text field to start entering your message.
Character counter Displays number of characters entered and amount remaining.
A counter is displayed in the top right corner of the text field to tell you how many characters are left and the number of pages.
If you touch the Back Key while composing a message, it’s saved as a draft in your Messaging application. Touch the message to resume composing it.
Touch Send to send the message.
Your message is displayed and responses appear in the same window, creating a message thread with that contact.