Oppo
Power Button Ends Call Setting auf Oppo
On Oppo phones running Coloros, ending a call usually means tapping the red hang-up button on the screen. This is slower than simply pressing the power button, especially if you are holding the phone to your ear and cannot see the display clearly.
Coloros includes a hidden option that lets the power button end an active call while the screen is on. It is not enabled by default on most devices, which is why pressing the power button during a call usually just locks the screen or does nothing related to the call itself.
To turn it on, go to Phone ➔ Open the Menu ➔ Tap on Settings ➔ Tap on Calling accounts ➔ Enable or disable Use Power button to hang up while screen is on.
Once enabled, a single press of the power button ends any ongoing call, exactly like tapping the on-screen hang-up button. Disabling the option again restores the default behavior, where the power button only locks or wakes the screen and has no effect on active calls.
This setting only affects calls while the screen is on. If the screen turns off during a call, the power button keeps its normal function of waking the display instead of ending the call.