Nokia Lumia 635

Select one of the following options:

Answer call, go to 1a.

Reject call, go to 1b.

Silence the incoming call alert, go to 1c.

If the screen lock is turned on:

Slide your finger up the display.

Press answer.

If the screen lock is turned on:

Slide your finger up the display.

Press ignore.

Press the upper or lower part of the Volume key when you get a call.

The incoming call alert is silenced without the caller hearing it, and the call continues until it's ended or diverted.