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Samsung

Samsung Galaxy S II

Samsung Exynos 4210released Feb 2011up to android 5latest android is 17
ro.product.devicei9100
Samsung Galaxy S II
photo: LineageOS Wiki
No recent updates

Released Feb 2011. Support looks quiet — check the build dates below before relying on it.

Hardware

SoC
Samsung Exynos 4210
CPU
Cortex-A9
GPU
ARM Mali-400 MP4
Architecture
arm
RAM
1 GB
Storage
16/32 GB
Screen
4.3" · 800x480 · Super AMOLED
Battery
1650 mAh (removable)
Network
2G GSM · 3G UMTS
Released
Feb 2011

Sensors & features

  • 3.5mm jack

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

ROMs · 02

The Samsung Galaxy S II (codename i9100) has 2 tracked custom ROMs on CustomDroid — including LineageOS, Sailfish OS, running up to Android 5. 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.

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

RSS feed — subscribe to get new Samsung Galaxy S II 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 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.

LineageOS publishes a step-by-step install guide for this device: wiki.lineageos.org/devices/i9100

Timeline

  1. Jul 2026
    LineageOS first tracked
  2. Sept 2026
    Sailfish OS 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.