Xiaomi Redmi 3S
● Actively maintained — released Aug 2017, newest ROM build 3 days ago (2 ROMs still current). A phone that still gets updates keeps going long after its manufacturer stops.
Specifications
- SoC
- Qualcomm MSM8940 Snapdragon 435
- CPU
- Cortex-A53 & Cortex-A53
- GPU
- Qualcomm Adreno 505
- Architecture
- arm64
- RAM
- 3 / 4 GB
- Storage
- 32 / 64 GB
- Screen
- 5.5" · 720x1280 · IPS LCD
- Battery
- 3080 mAh
- Released
- Aug 2017
2 custom ROMs available
The Xiaomi Redmi 3S (codename Mi8937) has 2 tracked custom ROMs on CustomDroid — including LineageOS, /e/OS, running up to Android 16. Each listing links to the project's own download and install guide.
New to flashing? It generally means unlocking the bootloader, booting a custom recovery, wiping, then installing the ROM — exact steps differ per device and ROM, so follow the Install guide for the one you pick, and back up first. New to this? Why flash a custom ROM or read the guides.
LineageOS publishes an official step-by-step install guide for this device: wiki.lineageos.org/devices/Mi8937.
Support timeline
- Jul 2026LineageOS, /e/OS first tracked
Dates show when CustomDroid first indexed each ROM for this device, not when support originally launched.
ROM availability and links come from each project. CustomDroid indexes builds, it doesn't mirror them — always download from the official project, verify the file's hash/signature, confirm it matches your exact codename, and back up before flashing.