In some situations, we want to send sms messages from our own Android application. There are two different ways to do such a thing: By using SmsManager class By using an implicit Intent The use of SmsManager facilitates the sms sending because it gives us the opportunity to customize this functionality with the manner we want, within our own Activity. In parallel, the use of Intents implies the use of built-in applications and sms clients that are installed in each Android device. In this example, we are going to implement both ways. More specifically, we are going to send a sms by using SmsManager and implicit Intent with SENDTO action and/or VIEW action.