Recommendation: Keep the M3 on the latest MIUI stable build that is based on Google’s mobile OS release 11 and install available security patches promptly; that combination gives the best balance of performance, battery life and app compatibility for this handset.
Factory software: The M3 shipped with MIUI 12 built on Google’s mobile OS release 10 (Q). The manufacturer delivered an official major upgrade to release 11 (R) and subsequent MIUI maintenance builds for many regions; there is no widespread official upgrade to release 12 for the standard M3 line as of the latest public releases.
Key hardware facts you should know: 6.53" FHD+ IPS display (2340×1080), Qualcomm Snapdragon 662 SoC (11 nm, octa-core up to 2.0 GHz) with Adreno 610 GPU, battery capacity 6000 mAh with wired charging support commonly advertised as 18W, rear camera array 48 MP main + 2 MP macro + 2 MP depth, front camera 8 MP, RAM options typically 4/6 GB, storage 64/128 GB with expandable memory via microSD, side-mounted fingerprint sensor, USB-C and 3.5 mm jack, weight around 198 g.
Practical steps: open Settings → About phone → System update to confirm the MIUI build and security-patch date; back up user data before applying major firmware builds; update over stable Wi‑Fi with battery above 50%; enable automatic patch installs if available. If you require a newer major Google OS release (release 12+), consider third-party firmware such as LineageOS or Pixel Experience, but expect bootloader unlocking, manual installation, potential stability trade-offs and warranty implications.
Current Android Version Installed
Immediately check Settings → About phone to confirm the installed OS release, MIUI build and Security patch level; if the OS release reads "10" the handset is on the original major release, "11" indicates the first platform upgrade.
- Exact fields to note: MIUI version, Build number, OS release (ro.build.version.release), Security patch level.
- If you see MIUI 12 or 12.5 paired with OS release 10, the device is on the original platform baseline.
- MIUI 12.5 or MIUI 13 with OS release 11 means an official platform upgrade was applied.
ADB/Linux method (accurate for remote verification):
- Connect with USB and enable USB debugging.
- Run: adb shell getprop ro.build.version.release – returns numeric release (e.g., 10 or 11).
- Run: adb shell getprop ro.build.version.security_patch – returns patch date (YYYY-MM-DD).
- Run: adb shell getprop ro.build.display.id – returns MIUI build string (helps identify stable vs. beta).
- If the security patch is older than six months, schedule a firmware refresh from the official updater or via Xiaomi’s recovery images.
- Before applying any system refresh, back up user data (local + cloud) and charge the battery above 50%.
- Prefer stable-channel builds; avoid unofficial packages unless you are comfortable with unlocking the bootloader and flashing custom firmware.
When reporting the device state (for support or resale), include: OS release number, MIUI build string, security patch date and region code (e.g., CN/EU/Global) to speed troubleshooting or update eligibility checks.
Factory Android version shipped with Poco M3
Out of box: MIUI 12 (stable) layered on AOSP 10; factory security patch level typically October 2020 and initial global builds use MIUI 12.0.x build strings.
How to verify factory firmware: Settings → About phone → check the "MIUI version" and Software information for the core OS release (displayed as a number such as 10). For a deeper check boot into fastboot and run fastboot oem device-info to confirm bootloader lock state and the active build fingerprint.
Reinstalling stock firmware: Download the correct fastboot package for the M3 model from the official MIUI/Xiaomi site, verify the package checksum, then flash with MiFlash using the appropriate option ("clean all" for full reinstall, "save user data" to preserve data). Use the matching regional package to avoid signature or modem mismatches.
OTA and upgrade notes: The handset shipped on AOSP 10 with MIUI 12; manufacturer updates were delivered afterward depending on region. Keep the bootloader locked and avoid custom recoveries if you want to preserve official over‑the‑air updates; unlocking or installing unofficial builds will stop OTA delivery and may require manual restoration via fastboot.
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