Yes, Samsung Galaxy A6 does have the fingerprint scanner.
No. Samsung Galaxy A6 does not have the hybrid sim slot. It has 2 sim cards slot and a dedicated MicroSD card slot for the memory card.
Samsung Galaxy A6 has Accelerometer, Fingerprint scanner, Gyro sensor, Geomagnetic sensor, Hall sensor and built-in GPS with Glonass.
Yes, Samsung Galaxy A6 does have the Dolby Atmos and also comes with few pre-set equalizers.
Yes, Samsung Galaxy A6 does have the LED flash with front camera.
Samsung Galaxy A6 (2018) is a convenient smartphone with great display, quality materials, good build quality and nice cameras.