Smart Answer Call changes the way you interact with your phone on call. All actions: Answer turn on speaker… let your smart phone do it. App works fine with android 5.x up to 8.x
Features:
*SMART ANSWER:
Answer incoming calls when:
- Raise the phone to my ear (this feature works best when placed phone in vertical state);
- Press home button;
- Detect bluetooth headset is plugeed;
- Answer incoming by voice command
* SMART SPEAKER
- Toggle speaker mode during a call when raise the phone back to my ear or place it face up on a surface.
- Silence incoming calls when place the phone face down on a surface.
* MORE:
- Mute the microphone when place the phone face down on a surface during a call.
- Shake to reject incoming calls or end calls.

Of course this smart app know your phone is in the pocket or use cover.
NOTICE: If your phone used Android 5.x or higher you need to allow this app access Notification. With Android 6.x or higher you need to allow all permissions: Go to Setting Application manager Smart Answer Call Permission and turn on all on this.
Install and enjoy!