Redmi SDM439 devices

codename Mi439Qualcomm SDM439 Snapdragon 439released Oct 2019up to Android 16

● Actively maintained — released Oct 2019, newest ROM build 1 day ago (2 ROMs still current). A phone that still gets updates keeps going long after its manufacturer stops.

Specifications

SoC: Qualcomm SDM439 Snapdragon 439
CPU: Cortex-A53 & Cortex-A53
GPU: Qualcomm Adreno 505
Architecture: arm64
RAM: 2 / 3 / 4 GB
Storage: 16 / 32 / 64 GB
Screen: 6.22" · 720x1520 · IPS LCD
Battery: 5000 mAh
Released: Oct 2019

3 custom ROMs available

The Redmi SDM439 devices (codename Mi439) has 3 tracked custom ROMs on CustomDroid — including LineageOS, /e/OS, crDroid, 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/Mi439.

Android:

LineageOSOfficial
Android 16v23.2by 0xCAFEBABE
Source: wiki.lineageos.org
Install guide Download
Updated 6 Aug 2026Report wrong data
/e/OSUnofficial
Android 16v4.1.1
Source: doc.e.foundation
Install guide Download
Updated 18 Jul 2026Report wrong data
crDroidOfficial
Android 14v10.6
Source: github.com
Install guide Forum Download
Updated 9 Jul 2024may be staleReport wrong data

Support timeline

Jul 2026
LineageOS, /e/OS, crDroid 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.