How to enable call privacy protection function on OPPO Find X7 Ultra?

Making a phone call is a common operation that everyone uses. If you happen to be outside, you have to make a call in a public place.If it is a more private or confidential topic, it will appear extremely embarrassing.In order to improve this situation, OPPO has launched a new call privacy protection function.So how to enable call privacy protection on OPPO Find X7 Ultra?

How to enable call privacy protection function on OPPO Find X7 Ultra?

It automatically takes effect when the volume of the earpiece is at 8 bars or below. When the volume is at 6 bars or below, the effect is best.When turned on, a green shield icon will appear in the status bar.

OPPO Find X7 Ultra uses a dual-diaphragm sound unit to reduce earpiece sound spillage and enhance call privacy. It takes effect when the earpiece volume is 8 levels and below.When call privacy protection is in effect, it can effectively reduce the sound leakage of the earpiece and protect the privacy of calls when you answer calls in crowded elevators, subways, restaurants and other places.

The call privacy protection function of OPPO Find.