Dual SIM Dialer Free is a contact card dialer designed for Android dual sim phones. With this app, users can dial a saved contact with just one click without having to choose the sim every time. It allows users to choose the name and phone number from contacts or fill the fields by themselves.

It's important to note that dialing from Dual SIM Phones is implemented by non-open (unofficial) API of Android framework and it's not guaranteed to work on all Android devices. Therefore, it should not be considered as a fault of the app if it doesn't work on some devices.

The app is free of charge, but there is a paid version called Dual SIM Dialer Pro, which is ad-free and supports widgets.