The Xiaomi Redmi 1S is just the beginning for MIUI 9
The Xiaomi Redmi 1S is just an appetizer to the new compatibilities. The recent version of MIUI 9 adds a large number of terminals to its compatibility list, among which are devices that were thought outdated. The specific models are: Xiaomi Redmi 2 / Prime, Redmi 4A, Redmi Note Prime, Mi 4i, Redmi 3S / Prime, Redmi Note 4G, Redmi 1S, Redmi Note 3, Mi 3, Mi 4, the Mi Max / Prime, the Redmi Y1 / Y1 Lite, the Redmi 4, the Mi 5, the Mi MIX 2, the Mi Max 2 and the Redmi Note 4.
According to the presentation of the ROM, MIUI 9 focuses on three major problems of the system: its stability, its fluidity, and its endurance. The new operating system of Xiaomi adopts a dynamic resource allocation mechanism to prioritize the allocation of the same to the applications that are used at that moment, also guaranteeing that its use does not end in a stagnation of the processes.
An example of this problem are the resources used in the network bandwidth. When a Smartphone downloads a file, be it an application or a video, and this is done in the background, it will immediately begin to affect the speed of the app that is being used at that moment, even though it does not is related to the download, resulting in slower responses, slower page loads, among other things. MIUI 9 focuses on optimization to ensure that these issues of background downloads do not affect the overall performance of the device, always staying in a stable state.