Here is a realistic performance breakdown of Android Oreo for Galaxy J2 SM-J200G:
A custom recovery like is required to flash the Oreo ROM. Download the TWRP image for and the Odin Flashing Tool . android oreo for galaxy j2 sm-j200g
Custom ROMs are open source. Reputable builds (LineageOS, DotOS) contain no spyware. However, only download from XDA Forums—avoid random Google Drive links. Here is a realistic performance breakdown of Android
Once you are inside TWRP:
Samsung Galaxy J2 Core (Blue, 1GB RAM, 16GB Storage) - Amazon.in DotOS) contain no spyware. However