Updating the stock SMS app

Updating the stock SMS app

My SMS app I developed can send SMS but once the SMS is sent, the stock
messaging app is not updated with the message I sent with my app. Is there
anyway to update the stock app?
This is how I send smses
private void sendSMS (String phone, String msg)
{
if (!(msg.isEmpty()))
{
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(phone, null, msg, null, null);
}
}