Wonep is a free UI kit made of 30+ unique mobile Sketch screens that you can use to kickstart a calling app including an additional Principle.
Freebies tagged call
Call her! is an incoming call widget designed following the current flat design trend. Free PSD designed by Ehsan Rahimi.
Call her! PSD incoming call widget
Free PSD UI of an incoming Skype call window designed by Giorgio Pia. It contains a small avatar and buttons for answering/closing the call.
