No. Samsung Galaxy A6 does not have the Always-on display.
Yes, Samsung Galaxy A6 does have the fingerprint scanner.
Yes, Samsung Galaxy A6 does have the 3.5 mm headphone jack.
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.
Samsung Galaxy A6 (2018) is a convenient smartphone with great display, quality materials, good build quality and nice cameras.