Samsung Galaxy S9 and S9 Plus (Codenamed starlte/star2lte) were launched with Android 8.0 Oreo but thanks to awesome developer support both devices have been enjoying all the latest Android versions.
The very popular Lineage OS 18.1 is now available for both devices. Following the guide, you can easily download/install Lineage OS 18.1 For Samsung Galaxy S9 and S9 Plus (Android 11). Lineage OS 18.1 is an upgraded version of Lineage OS 18 with some performance and security enhancements.
As mentioned, among all the aftermarket firmware, Lineage OS is the best one when it comes to performance, stability, and fully-featured Custom ROM. Thanks to Xda developer Synt4x.93, and the Lineage OS Team for this latest ROM.
Lineage OS 18.1 Features
LineageOS is a free, community-built, aftermarket firmware distribution of Android 11, which is designed to increase performance and reliability over stock Android for your device. LineageOS is based on the Android Open Source Project with extra contributions from many people within the Android community.
It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restores the Google parts. LineageOS does still include various hardware-specific code, which is also slowly being open-sourced anyway.
So, the Android 11-based Lineage OS 18.1 firmware offers all the useful and popular features like the Conversation Notification, One-Time App Permissions, Notification History, Chat Bubbles, Built-in Screen Recording, Improved Media Player, Smart Reply, New Power Menu, Scoped Storage, Wireless ADB, Pin Apps to Share sheet, and more.
- Scheduled Dark Mode
- Smart Reply & Smart Folders
- Improved App Suggestions
- Conversations Notification
- Built-in Screen Recording
- Pin Apps to Sharing Menu
- Improved Voice Access (Accessibility)
- Bluetooth Active in Airplane Mode
- Improved Privacy & Security Features
- A New Power Menu
- Redesigned Device Controls
- Redesigned Music Control
- One-Time App Permissions
- Permissions Auto-Reset
- Chat Bubbles
- Notification History
- Wireless Android Auto
- Google Play System Update (Security Patch)
- Talkback braille keyboard
- Improved Lookout Mode
- Improved Camera features (Bokeh Mode, Built-in HAL, and Camera2 API support)
- Enhanced Digital Wellbeing
- Improved Enterprise Mode
- Improved Autofill Keyboard Suggestions
- Nearby Share
- Scoped Storage
- Resume on Reboot
- Blocked Permissions
- Soft Reboot
- Background Location
- Improved Call Screening (Identify Spams)
- Picture-in-picture mode
- 5G detection API
- Hinge angle sensor support
- Ethernet tethering
- Gesture sensitivity
What is working and What’s not?
- Mobile Network
- Fingerprint Sensor
- Call Recording
- SELinux Enforcing
- Android Auto
- Glove Mode
- OTA Updates
- Iris Scanner
- If you find any bug report to the dev (visit official Xda page linked below)
Download/Install Lineage OS 18.1 on Samsung Galaxy S9 and S9 Plus (Android 11)
The installation is pretty simple and easy. If you have installed any custom ROM before then you will have no issue flashing the ROM as the process is exactly the same. But before proceeding to the installation let me clear that this build is in the very early stage which means there will be bugs and many functions may not work properly. So, we do recommend not to flash the ROM on your primary device.
- Enable USB Debugging on your Samsung Galaxy S9 and S9 Plus. Settings > About Phone > Tap on Build Number 7 times > Go back to Settings > System > Advanced > Developer Options > Enable USB Debugging.
- Also, enable the OEM Unlock from the Developer Options.
- Make sure the bootloader on your device is unlocked and your device is rooted and you have a custom recovery installed.
- Make sure your device has more than 50% battery.
- Make sure you have taken a backup of your important data. Now proceed to install Lineage OS 18.1 ROM (Android 11) on your Samsung Galaxy S9 and S9 Plus device.
- Make sure that you have installed TWRP recovery on your Android device.
RootMyGalaxy.net is not responsible for any damage happened to your device(s) while following this guide, proceed at your own risk.
Download Link:Note: If the link is broken head over to the development page for working link and other updates about the custom ROM.
- Gapps Android 11 | NikGApps for Android 11 | BitGApps 11.0 | OpenGApps ARM 11.0
- Download latest Magisk (If you want Root access)
Flashing Steps: Lineage OS 18.1
- Make sure your device is rooted and have the latest TWRP recovery installed. (Check the Pre-Requirement Section Above)
- First, download the files from the above link and extract them.
- Now transfer the downloaded files to the internal storage of your device.
- Ensure that the bootloader is unlocked.
- Now reboot to the TWRP recovery.
- Take a Nandroid backup by selecting the option from the home screen and then your data and cache from the recovery menu.
- Now return to the main menu of TWRP and wipe cache, data, and system before flashing the ROM
- In order to Wipe data: Go to Wipe —> Advanced Wipe and select Dalvik/ART cache, cache, System, Vendor, and Data and then swipe to wipe. (Don’t select the internal storage)
- Now return to the main menu of TWRP again and install the ROM which is just a .zip file
- Go to Install -> Install Zip > ROM File (.zip)
- Next flash the Gapps file like custom ROMs
- Last but not least, flash Magisk (optional) if you want to root (not recommended as all devices have different methods)
Once the flashing process is completed, reboot your Samsung Galaxy S9 and S9 Plus and you will be booted into Lineage OS 18.1 ROM Based on Android 11. If you have any doubts regarding this process, feel free to comment below.