How to turn on Samsung galaxy features|2019|new model J4

Samsung Galaxy J4 full specifications. GENERAL. Release date. May 2018. Launched in India. DISPLAY. Screen size (inches) 5.50. Touchscreen. HARDWARE. Processor. 1.4GHz quad-core. Processor make. CAMERA. Rear camera. 13-megapixel (f/1.9) SOFTWARE. Operating system. Android 8.0. CONNECTIVITY. Wi-Fi. Yes. SENSORS