Android Nougat update build number is G550FYXXU1CQL6, new features such as bundled notifications, Data saver, a Quick reply from notifications, Quick settings, new Settings app, and much more.
Samsung Galaxy On5 pro feature a 5.5-inch (1280 x 720 pixels) HD display powered by a 1.3 GHz quad-core Exynos processor coupled with 2 GB of RAM and 16 GB of internal storage which is further expandable up to 128 GB via MicroSD card. On Camera, it has an 8MP rear camera with LED flash and 5MP front-facing camera. On connectivity it include 4G LTE / 3G HSPA+, Wi-Fi 802.11 b/g/n, Bluetooth 4.1, GPS/ GLONASS packed by a 2600mAh battery.