How does OnePlus9 mute the ringtone?

There is a three-level switch on the left side of the mobile phone, and the bottom one can be turned on.

There is a three-level switch on the left side of the mobile phone, the above is vibration, the second is Do Not Disturb, and the next is ringing.

One plus 1 mobile phone made its debut on 20 14, 10, 13, and announced the product concept of "No Will Do". On March 8, 20021,one plus mobile phone and Hasselblad reached a three-year strategic cooperation, and the two sides will jointly promote the innovative development in the field of mobile phone imaging.