vineeth.in , via OnePlus 7T , Dec 2, 2020 : Hi, i recently noticed that while receiving a call while headphone is plugged in, the ringtone is not audible via phone's speakers. instead phone just vibrates and the ringtone is heard via earphones. Please confirm if this is intentional else requesting to fix this issue. If we are not using earphones but it is just plugged in, we might miss any calls.
Tokolozi , Dec 2, 2020 : https://forums.oneplus.com/feedback/ However check if there isn't an option already in sound settings.
Dsquared1955 , via OnePlus Community App , Dec 2, 2020 : I believe that is completely normal. Same thing mine does when using Bluetooth headphones.
Aadeeptha_Samarakoon , via OnePlus 7T Pro McLaren Edition , Dec 3, 2020 : is alert slider in ring mode?