An curved arrow pointing right. Have you ever wondered why you see either a slider or buttons when receiving a call on your iPhone? Here's a simple explanation to clear up your confusion.

OnePlus has finally given a glimpse of the multi-function button that replaces the iconic alert slider on its next phone, said to arrive in the coming weeks.

This button will be located on the left-hand side of the phone, in the upper portion of that side, as you can see. It is here to replace the alert slider that has been a part of OnePlus phone for ...