Samsung Galaxy S3

Samsung Exynos 4412 Quadreleased 2012

ro.product.devicem0

also sold as Galaxy S3 · GT-I9300 · GT-I9300T

No recent updates

Released 2012. Support looks quiet — check the build dates below before relying on it.

Hardware

SoC: Samsung Exynos 4412 Quad
CPU: Quad-core 1.4 GHz Cortex-A9
GPU: Mali 400 MP4
Architecture: armv7
RAM: 1 GB (GT-i9300 & SHW-M440S)
Storage: 16/32/64 GB
Screen: 720x1280 · Super AMOLED
Released: 2012

Specs from postmarketOS wiki (CC BY-SA 4.0).

ROMs · 01

The Samsung Galaxy S3 (codename m0) has 1 tracked custom ROM on CustomDroid — including postmarketOS. Each listing links to the project's own download and install guide, and was last checked against the projects' catalogues on 21 Sept 2026.

postmarketOSLinux distroOfficial
gitlab.com
checked 21 Sept 2026
Install guide Download

RSS feed — subscribe to get new Samsung Galaxy S3 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

This is a Exynos device, so on Windows you'll want the Samsung Android USB driver before your computer will see it in fastboot. Which USB drivers you need.

Timeline

Jul 2026
postmarketOS 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.