The Samsung Galaxy J7 Prime (SM-G610F/Y/M) was, in its heyday, one of the most reliable mid-range smartphones on the market. Launched in 2016 with Android 6.0.1 Marshmallow, it eventually received the official Android 8.1 Oreo update. For many users, that was the end of the road. The device began to feel sluggish, apps took longer to load, and security patches became a distant memory.
Advanced doze mode tweaks and aggressive RAM management extend screen-on time (SOT). prometheus v3 rom j7 prime