I've now switched to a flip case with bluetooth keyboard. However as a result i've lost the facility to turn on / turn off the display previously enjoyed with the old case, which occurred upon opening / closing the flap over the screen. So i read up and found articals indicating you can use the android smart stay setting to at least keep the display on whilst the screen/camera can detect a face. According to the user manual the Smart Stay is maintained within Settings-Display. However i have updated to Android 7 and this feature is not listed there. Would welcome any advice on how to once again enjoy shutting the screen down without clicking the power button.