Contact card dialer specially designed for dual sim phones.
Now you don't need to choose the sim every time while making a call.
With one click you will dial a saved contact.

You can choose the name and phone number from contacts or fill the fields by yourself.

The paid application Dual SIM Dialer Pro https://play.google.com/store/apps/details?id=mk.dimitar.dualsimdialer.pro is ad free and supports widgets.