Android: how to send SMS(text message) programmatically

You need SEND_SMS permission:

Code:

        try {
            SmsManager smsManager = SmsManager.getDefault();
            String sPhoneNumber = "1-222-3333";
            String sMessage = "Hello World";
            smsManager.sendTextMessage(sPhoneNumber, null, sMessage, null, null);
            Toast.makeText(this, "Message has been sent", Toast.LENGTH_LONG).show();
        } catch (Exception e) {
            Toast.makeText(this, "Message send failed", Toast.LENGTH_LONG).show();
        }

Warning: Make sure your app doesn't send SMS without user's knowledge. It will violate the Google's policy and your app will be suspended.

• Do not send SMS, email, or other messages on behalf of the user without providing the user with the ability to confirm content and intended recipient.