Two-tone beeping in a call. OnePlus3

[Android Central Question]

Whenever I get a notification in a call (mainly facebook messenger), my phone will play a two-tone beeping noise.

I am using a OnePlus3:
Android 8.0.0.
OxygenOS 5.0.6
The default phone app

Is there any way to disable this feature?

 

[Rukbat]

I don't think there's a "turn off notification sound during calls" feature, but you could try adding a rule to DND - During call.