To send a birthday SMS, open your phone's SMS application, compose the message and send it. This process takes just a few minutes and requires a cellphone with SMS features enabled.Continue Reading
Power your phone on and open the text messaging application.
In the recipient field, enter the telephone number of the person whom you are wishing a happy birthday. Compose a message wishing the person a great day and communicating that you are thinking of him.
Send the SMS message by choosing the appropriate button, which is usually labeled "send."