Screen is known as glass lens display. A broken glass can cause several issues in the screen.
Apply a clear tape on the screen to prevent from any additional damage
Put it inside a protective case
Cracks on the glass screen
bubbles inside the glass screen
Unresponsive touch display sensor
Dropping or smashing iPhone 6 on the floor or concrete.
Applying excessive pressure on touch screen
Call us and we will come to you and repair your device in 20- 30 mins, along with warranty. Travelling charges are free and our technician will come on the same day. If you live out of town then you can ship us your device with check or money order . We will fix your device and ship it back to you within a day after receiving it