There is no manual associated with the link at the bottom of Motorola Moto G page
When a call comes through, it is a white phone icon blinking. I swipe to the right and nothing happens. To the left deletes the call. What is wrong????
When someone calls you, touch the black phone icon then flick it to the phone icon with a green background.
Source: Calls section of the manual (page 24)
You can download the manual on the bottom part of Motorola Moto G page.