When you are listening to someone on the Android 6.0.x Marshmallow smartphone and devices in a very noisy environment, it becomes difficult to understand; whether the person on the other side of the call has answered or not. Similarly, if you are using more than one mobile device at the same time, you may not be able to understand from which caller you have received the response. This option is specifically useful for the business people who have to deal and listen to more than one call at a time and it becomes difficult for them to balance the response.
Keeping in view the specific situation, Android has included a specific feature in Marshmallow to solve this issue. When activated, your phone will vibrate whenever caller on the other side of the smartphone will answer.
The activation of this feature is easier but if you feel problem, see the instructions.
1: Tap the icon of the ‘Dialer’ app at the bottom left corner of your Android 6.0.x Marshmallow smartphone or device to open up the ‘Dialer’ app screen.2: At the ‘Dialer’ app screen, tap the 3-digit settings button at the top right corner of the screen, but immediately below the status bar. It will open up a popup menu.3: At the popup menu, tap the ‘Settings’.4: Tap the ‘Sounds and vibration’ on the ‘Settings’ screen.5: See; the ‘Vibrate on answer’ under the ‘In-call vibration’ is not checked, i.e. not enabled and activated.It means; your Android smartphone is not, currently, vibrating on the answer.
6: If you want to vibrate on answer, tap it to activate and enable.That’s all!