Download LineageOS 18 on Samsung Galaxy S3 & How To Install

The Samsung Galaxy S3 (GT-i9300) has received the first alpha LineageOS 18 ROM build. LineageOS 18 is based on the latest Android 11 update. The base of the ROM comes from the Android Open Source Project (AOSP) code, which means it offers a stock Android experience. Below you can download and install the LineageOS 18 ROM (maintained by ChronoMonochrome) alongside the latest Google apps on your Galaxy S3.

LineageOS 18 Features

lineageos 18 galaxy s3

LineageOS 18 is a custom ROM available that can be downloaded and installed on many Android devices. It based on Google’s AOSP (Android Open Source Project) and it offers the stock Android experience. This particular version of the ROM is based on Android 11. It has all the new features including Bubbles, screen recording ability, smart replies, device controls, media controls, and more.

Additionally, the ROM offers other essential and helpful applications for an even better experience. It includes apps such as AudioFX (audio optimizer), a lightweight browser that works well even on low-end devices, a good camera app, trebuchet (a highly customizable launcher), terminal, and more. Additionally, LineageOS has some useful features that are not included in the original AOSP code. For example, there are custom Quick Settings tiles, LiveDisplay, lock screen customization, system profiles, PIN scramble, privacy guard, and button customization.

It offers other helpful applications such as AudioFX, a lightweight browser, and Trebuchet, a highly customizable launcher. Furthermore, LineageOS offers features such as system profiles, lock screen customization, root access, expanded desktop, custom button placement, LiveDisplay, Protected Apps, PIN scramble, custom pattern sizes, call recording and more.

How To Install LineageOS 18 on the Samsung Galaxy S3


You are about to install a custom ROM on your Galaxy S3. If you properly follow the tutorial below, you will be running the latest ROM in no time. However, please note that there might be issues along the way. We shall not be held responsible if you damage or brick your phone. Please proceed at your own risk.

What is working

  • Boots
  • Audio (playback && recording)
  • Bluetooth
  • Graphics
  • Camera
  • Sensors
  • RIL (SMS, mobile data, calls)
  • Wifi
  • USB
  • Video playback (HW/SW)

Known Issues

  • GPS
  • Wifi hotspot


In order to flash LineageOS 18 on your phone, you need to have an unlocked bootloader. You cannot do this if you have a locked bootloader. Furthermore, you need a custom recovery to flash the flashable ZIP file. For this, you need a custom recovery. We recommend you to use TWRP.
  • Backup everything on your phone before you do anything. A factory reset is always recommended when installing a new ROM, especially if the old ROM is not the same as the old one.
  • Charge your phone to at least 60%. In case something goes wrong and the phone gets stuck, it will not turn off due to low battery.
  • Make sure you have a custom recovery installed. TWRP is the recommended recovery for ROM installation.

Download Center

Install LineageOS 18 on the Galaxy S3

Please note that is a highly experimental build. It is not fit for daily usage. There are a lot of bugs and should not be installed as a daily driver. Install this only if you want to test Android 11. Please proceed at your own risk.
  1. Download all the necessary files and transfer them to the internal storage of your Galaxy S3.
  2. Press and hold the power button. Tap on power off to turn off the phone.
    1. Hold and press the volume down + home + power buttons at the same time. Release them when the screen turns on. The phone will go into recovery mode.
  3. Before you flash the ROM, you need to wipe data. To do so, tap on Wipe and then choose Advanced Wipe. Select Dalvik / ART cache, System, Vendor and Data. Swipe to wipe.
    Do not select the Internal Storage option. If you do so, everything in your phone’s internal storage will get deleted including any photos and videos.
    twrp Galaxy s3
  4. After wiping the data on your phone, tap on Install. and select the downloaded LineageOS 18 ROM file. Swipe to flash. Wait for the ROM to be installed.
  5. After the ROM is installed, tap on Install once again. This time, select the Android 11 Gapps package. Again, swipe right to install.
  6. Reboot your phone after you have performed everything above.

That is all you need to do to install LineageOS 18 on your Galaxy S3. If you go to the app drawer, you will also see apps such as YouTube, Google Maps, and Google Play Services, thanks to the Google Apps package that you installed.


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