Use this app to interact with Lumia Windows Phones without touching the display. Simply pick up the smartphone and put it to your ear to answer calls. Mute the phone by putting it upside down on a flat surface. Placing the smartphone with the display up on a flat surface will enable the speaker mode. All the gestures can be toggled on or off but unfortunately some of the features are limited on Lumia 630, Lumia 635 and Lumia 530 smartphones. It could be that this app is a taste of things to come as standard in Windows 10 smartphones.