To root a Samsung Galaxy A3 (2017) model Go to product viewer dialog for this item.
with U3 firmware on Android 8.0 Oreo, you must unlock the bootloader, install a custom recovery like TWRP, and then flash a root package such as Magisk. To root a Samsung Galaxy A3 (2017) model
: Unlocking the bootloader and rooting will perform a factory reset, erasing all data. you must unlock the bootloader
: Flashing incorrect files for the wrong binary version (U3) can permanently brick your device. install a custom recovery like TWRP