CustomDroid
Xiaomi

Xiaomi Mi MIX 3

Qualcomm SDM845 Snapdragon 845released Nov 2018up to android 15latest android is 17
ro.product.deviceperseus

also sold as MIX 3 · Mi MIX 3

Xiaomi Mi MIX 3
photo: LineageOS Wiki
Actively maintained

Released Nov 2018, newest ROM build 1 day ago (3 ROMs still current). A phone that still gets updates keeps going long after its manufacturer stops.

Hardware

SoC
Qualcomm SDM845 Snapdragon 845
CPU
Kryo 385
GPU
Qualcomm Adreno 630
Architecture
arm64
RAM
6/8/10 GB LPDDR4X
Storage
128/256 GB UFS2.1
Screen
6.39" · 1080x2340 · AMOLED
Battery
3200 mAh
Network
2G GSM · 2G CDMA · 3G UMTS · 4G LTE
Released
Nov 2018

Sensors & features

  • Accelerometer
  • Compass
  • Dual SIM
  • Dual-frequency GNSS
  • Fingerprint reader
  • GPS
  • Gyroscope
  • Light sensor
  • NFC
  • Qi wireless charging
  • Ultrasound proximity sensor

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

ROMs · 06

The Xiaomi Mi MIX 3 (codename perseus) has 6 tracked custom ROMs on CustomDroid — including Ubuntu Touch, LineageOS, LineageOS for microG and 3 more, running up to Android 15. 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

Linux mobile operating systems — not Android; Android apps don't run natively

RSS feed — subscribe to get new Xiaomi Mi MIX 3 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/perseus

Timeline

  1. Jul 2026
    LineageOS, /e/OS, Paranoid Android first tracked
  2. Sept 2026
    Ubuntu Touch, 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.