Google has officially fragmented Android with a special variant for low end devices lol.
Android Developers Blog: What’s New in Android: O Developer Preview 2 & More
Android Developers Blog: What’s New in Android: O Developer Preview 2 & More
Today we gave a sneak peek of a new experience that we’re building specifically for Android devices that have 1GB or less of memory -- Internally we call it “Android Go,” and it’s designed around three things
OS: We’re optimizing Android O to run smoothly and efficiently on entry-level devices
Apps: We’re also designing Google apps to use less memory, storage space, and mobile data, including apps such as YouTube Go, Chrome, and Gboard.
Play: On entry-level devices, Play store will promote a better user experience by highlighting apps that are specifically designed for these devices -- such as apps that use less memory, storage space, and mobile data -- while still giving users access to the entire app catalog.
The Android Go experience will ship in 2018 for all Android devices that have 1GB or less of memory. We recommend getting your apps ready for these devices soon -- take a look at the Building for Billions to learn about the importance of offering a useful offline state, reducing APK size, and minimizing battery and memory use.