CustomDroid
Xiaomi

Xiaomi Mi 9 SE

Qualcomm SDM712 Snapdragon 712released Feb 2019up to android 16latest android is 17
ro.product.devicegrus

also sold as MI 9 SE · Mi 9 SE

Xiaomi Mi 9 SE
photo: LineageOS Wiki
Actively maintained

Released Feb 2019, newest ROM build 1 day ago (4 ROMs still current). A phone that still gets updates keeps going long after its manufacturer stops.

Hardware

SoC
Qualcomm SDM712 Snapdragon 712
CPU
Kryo 360
GPU
Qualcomm Adreno 616
Architecture
arm64
RAM
6 GB
Storage
64/128 GB
Screen
5.97" · 1080x2340 · AMOLED
Battery
3070 mAh
Network
2G GSM · 2G CDMA · 3G UMTS · 4G LTE
Released
Feb 2019

Sensors & features

  • A-GPS
  • Accelerometer
  • Compass
  • Dual SIM
  • Dual-frequency GNSS
  • Fingerprint reader
  • BeiDou
  • Galileo
  • GLONASS
  • GPS
  • Gyroscope
  • IR blaster
  • Light sensor
  • NFC
  • Ultrasound proximity sensor
  • USB OTG

Specs from the LineageOS wiki (CC BY-SA 3.0).

ROMs · 07

The Xiaomi Mi 9 SE (codename grus) has 7 tracked custom ROMs on CustomDroid — including LineageOS, AlphaDroid, LineageOS for microG and 4 more, running up to Android 16. Each listing links to the project's own download and install guide, and was last checked against the projects' catalogues on 21 Sept 2026.

Tick “compare” on two or three builds to see them side by side.

Show
Android

RSS feed — subscribe to get new Xiaomi Mi 9 SE builds in your reader · JSON

Before you flash

Flashing 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. Check what can break (banking apps, DRM, carrier features) and how to get back to stock before you start. Why flash a custom ROM · All guides

Custom recovery for this device: TWRP. Flash the one your chosen ROM's guide asks for — common recovery errors.

This is a Qualcomm device, so on Windows you'll want the Google USB Driver (and QDLoader 9008 to unbrick) before your computer will see it in fastboot. Which USB drivers you need.

LineageOS publishes a step-by-step install guide for this device: wiki.lineageos.org/devices/grus

Timeline

  1. Jul 2026
    LineageOS, /e/OS, PixelOS, AlphaDroid, Project Elixir first tracked
  2. Sept 2026
    LMODroid, LineageOS for microG 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.