Android Question sms intent notworking on kitkat..

I have hit the same issue I would suggest you have a look at this https://www.b4x.com/android/forum/t...sages-without-notification-android-4-4.37171/

It is no longer possible to have secret SMS messages unless your app is set as the default SMS message app.

Yes. Starting from KitKat you still can intercept SMS but not silently capture it without they appear in the inbox.
Also, you can't send SMS (you will see no error if you try but the SMS is not sent).
As Mark told, your app must be set as the defalut SMS app to do all of this.
But the main problem is that you need to write a new SMS client interface from scratch that allow the user to normally manage SMS. And this is a huge and complex job if you want to implement all the functions that the stock client has ...