Custom Rom For Samsung A9 2018 May 2026

Technical Report: Custom ROM Development for Samsung Galaxy A9 (2018)

Report ID: AND-CROM-SMA9-2024
Date: [Current Date]
Device Codename: a9y18qlte
SoC: Qualcomm Snapdragon 660 (SDM660)

3. Pixel Experience Plus (Android 13) – Pixel Perfection

• Based on: Android 13 with Pixel Goodies
• Stability: 8.5/10 (Discontinued but rock solid)
• Best for: Those who want Google Camera, Google Dialer, and Pixel launcher out of the box.
• Note: No longer updated, but the final build is very stable.
• Download: Pixel Experience archive.

Where to find builds & support

• XDA Developers forum threads for Samsung A9 (2018) device sections.
• Telegram/Reddit groups or GitHub repos of the ROM maintainer.
  Look for explicit mention of your model (e.g., SM-A920F) and recent activity.

Solid Story — Custom ROM for Samsung Galaxy A9 (2018)

A Deep Dive into Custom ROMs for the Samsung Galaxy A9 (2018): Breathing New Life into a Quad-Camera Pioneer

Introduction: The Forgotten Mid-Ranger

The Samsung Galaxy A9 (2018) was a bold experiment. As the world’s first smartphone with four rear cameras, it aimed to bring versatility to the mid-range segment. However, like many Samsung phones from this era, it shipped with the heavy, resource-hungry Samsung Experience UI (later One UI). Fast forward a few years, and the official software support has long ended, leaving users stuck on Android 10 (One UI 2.1) with outdated security patches.

Enter the custom ROM community. For those willing to tinker, custom ROMs offer a lifeline. After spending two months flashing, testing, and daily driving several ROMs on my A9 (SM-A920F), here is my exhaustive review of the current landscape.

Why Bother with a Custom ROM on the A9 2018?

Before diving into specific builds, let’s address the elephant in the room: Is it worth it?

• The Pros: Dramatically improved performance (the Snapdragon 660 feels snappier without Samsung’s laggy UI overlay), up-to-date security patches (Android 13/14 vs stock Android 10), vastly better RAM management, and a stock Android experience reminiscent of Pixels.
• The Cons: You lose Samsung-specific features (Secure Folder, Samsung Pass, Good Lock). The quad-camera setup is reduced to a basic single-lens functionality in most ROMs. Samsung Pay is gone. Also, there is always a risk of bricking if you are not careful.

The Main Contenders (Status: Early 2025)

The A9 2018 is not as popular as the Galaxy S series, but a few dedicated developers on XDA and Telegram have kept it alive. The most stable and actively maintained ROMs are:

1. LineageOS 20 (Android 13) – The most stable daily driver.
2. Project Elixir (Android 13/14) – For those who want customization.
3. crDroid (Android 13) – Feature-packed but slightly heavier.
4. Pixel Experience / PixelOS (Android 13) – For the pure Google experience.

Detailed Review: LineageOS 20 – The Gold Standard

I spent three weeks on LineageOS 20 (Unofficial, maintained by a developer named Aarav on Telegram).

Installation Experience: Moderate difficulty. You need to unlock the bootloader (which wipes data and trips Knox—but on an old phone, who cares?), install a custom recovery (TWRP), and then flash the ROM. The instructions are clear, but newbies might struggle with the vendor partition requirements. Warning: The A9 has a fragile bootloader unlock process; you must enable OEM unlocking in dev settings and wait for the 7-day timer if you just reset the phone.

Performance & Daily Use: 9/10 Wow. The difference is night and day. Stock One UI 2.1 feels like wading through molasses. LineageOS 20 is fluid. Apps open faster, the app drawer doesn’t stutter, and the 6GB of RAM finally feels like 6GB. UI transitions are smooth at 60Hz (the screen is only 60Hz anyway). Gaming (Call of Duty Mobile on medium settings) is actually more stable because the CPU isn’t throttling under Samsung’s thermal profile.

Battery Life: 8/10 With the original 3800mAh battery (now several years old), I averaged 5.5 to 6 hours of screen-on time. That’s about 30 minutes more than stock. Idle drain is excellent—losing only 2-3% overnight. Adaptive battery works better here than on stock.

The Quad-Camera Situation: 5/10 Here is the biggest compromise. Stock Samsung camera software is proprietary. On any AOSP-based ROM, the four cameras (Telephoto, Ultra-wide, Depth, Main) are reduced to just the main 24MP shooter. You cannot switch to the 2x optical zoom or the ultra-wide lens. The Google Camera (GCam) port (specifically for SDM660) helps—it takes better main camera photos than stock thanks to HDR+—but you lose hardware-level switching. If you rely on those extra lenses, do not flash a custom ROM.

Connectivity & Bugs:

• Wi-Fi/Bluetooth: Perfect. No drops.
• NFC: Works for Google Pay (if you hide root with Magisk).
• Audio: Works fine, but the dual speaker mod (using earpiece as second speaker) from stock is gone.
• Known bug: Auto-brightness is a little slow to react. Also, VoLTE works on some carriers but not all; check your region.

Project Elixir – The Customization King

After Lineage, I tried Project Elixir. It’s based on AOSP but with tons of customizations—status bar icons, lock screen clocks, monet theming, and a built-in launcher that feels like OneUI’s app drawer mixed with Pixel.

Performance: Slightly heavier than LineageOS. You’ll notice a micro-stutter when pulling down the notification shade 10% of the time. Battery life is 30 minutes less.

Why choose this over Lineage? If you miss Samsung’s “Good Lock” style customization, this is your answer. The amount of UI tweaks is staggering. However, stability takes a minor hit.

PixelOS – For the Purist

This one aims to replicate the Pixel experience exactly. It comes with Google apps pre-included, Pixel launcher, and even the “At a Glance” widget. custom rom for samsung a9 2018

The good: It feels like a Google phone. The camera (using GCam) integrates nicely. The call screening feature (on supported regions) works. The bad: The ROM maintainer for A9 lost interest, so the last update was 7 months ago (Android 13 QPR3). Security patch is outdated. I wouldn’t use this for banking.

The Major Dealbreakers You Must Know

1. Camera is crippled. If you use ultra-wide or telephoto daily, stick with stock Android 10.
2. Samsung Good Lock / Secure Folder is gone. No way around it.
3. No Android 14 (stable) yet. While some devices get A14, the A9’s A14 builds are experimental with broken RIL (mobile data). Stick to Android 13.
4. SafetyNet / Play Integrity: Out of the box, most ROMs fail Google’s Play Integrity checks. You must root with Magisk and install a module like “Play Integrity Fix” to use Google Pay or banking apps. This adds maintenance overhead.

Who is this custom ROM for?

• The Tinkerer: You enjoy the process of flashing and optimizing.
• The Privacy-Conscious User: You want to de-Google or run Graphene-like features (though note: no official Graphene for A9).
• The Performance Seeker: You hate how slow One UI has become and just want a snappy device for social media, browsing, and light gaming.
• Someone with a dead motherboard: If you brick your A9, you aren’t losing a $1000 phone.

Who should absolutely avoid this?

• Camera enthusiasts (you bought the A9 for its quad lenses).
• Samsung ecosystem users (Galaxy Buds features, Galaxy Watch integration).
• Someone who needs “it just works” with no tinkering.

Final Verdict: Is it worth it in 2025?

Yes, conditionally.

If your Galaxy A9 2018 is collecting dust in a drawer because it’s too slow to use as a daily driver, a custom ROM will give it 2 more years of useful life. Go with LineageOS 20. It is the most stable, best-performing option. You’ll gain speed, security updates, and a modern Android interface.

However, if you still rely on the ultra-wide camera for photos or use Samsung Pay daily, stay on the final official One UI 2.1 (Android 10). No custom ROM can give you those proprietary features.

Scorecard (LineageOS 20 as benchmark):

• Performance: 9/10
• Battery Life: 8/10
• Camera (Main): 7/10 (with GCam)
• Camera (Versatility): 2/10
• Stability: 8/10 (one random reboot per week)
• Community Support: 5/10 (small but helpful Telegram groups)
• Recommended for daily driver? Only if you can live without wide/telephoto lenses.

Pro Tip: Before flashing, back up your stock EFS partition (IMEI data) via TWRP. The A9 is known to occasionally lose IMEI on custom ROMs, and without that backup, you’re left with a WiFi-only tablet.

Samsung Galaxy A9 (2018) — known for being the world's first quad-camera smartphone — remains a solid piece of hardware, but its official software support ended years ago. To keep this device snappy, secure, and modern, the developer community has produced several Custom ROMs that bring newer versions of Android and a cleaner user experience. Popular Custom ROMs for Galaxy A9 (2018) Since this device uses the Snapdragon 660

chipset, it has better development support than many Exynos-based Samsung phones. LineageOS (18.1 / 19.1 / 20):

The gold standard for stability. It offers a "Stock Android" feel, stripping away Samsung's One UI bloatware to significantly improve RAM management and speed. Pixel Experience: Designed to make your

feel like a Google Pixel. It comes with all Pixel-exclusive features (wallpapers, icons, animations) and Google Apps (GApps) pre-installed.

Best for users who want extreme customization. It is based on AOSP but includes a "Configuration Center" where you can tweak everything from status bar icons to hardware button shortcuts.

A lightweight ROM focused on battery life and "clean" performance. It avoids unnecessary features to ensure the Snapdragon 660 runs as cool as possible. Prerequisites for Flashing Before you begin, ensure you have the following: Unlocked Bootloader:

Samsung's "OEM Unlocking" must be toggled in Developer Options. Custom Recovery: You will need TWRP (Team Win Recovery Project) or OrangeFox Recovery installed. Drivers & Tools: ADB and Fastboot drivers installed on your PC. Flashing a ROM wipes all data . Back up your photos, contacts, and 2FA tokens. General Installation Steps Get the ROM file and the appropriate (if not included in the ROM).

Move the files to your phone's internal storage or an SD card. Boot to Recovery: Power off, then hold Volume Up + Power to enter TWRP. Wipe > Advanced Wipe and select Data, Cache, System, and Dalvik , find your ROM , and swipe to flash. Repeat for GApps/Magisk (optional).

Format Data (if required to remove encryption) and reboot to System. Why Install a Custom ROM? Android Version Upgrades:

Official support stopped at Android 10, but custom ROMs can bring you up to Android 13 or 14 Performance: Technical Report: Custom ROM Development for Samsung Galaxy

Removing "One UI" bloatware frees up 1–2GB of RAM, making multitasking much smoother.

Better control over app permissions and the ability to run a "De-Googled" system if desired. Camera Improvements: Many ROMs allow you to install GCam (Google Camera ports)

, which often produces better dynamic range than the stock Samsung app. Flashing custom software voids your warranty and trips Samsung Knox

, meaning features like Samsung Pay and Secure Folder will stop working permanently. direct download links from XDA Developers for a specific Android version?

Your Samsung Galaxy A9 (2018) might be several years old, but its quad-camera setup and Snapdragon 660 still have plenty of life—especially with the right software.

Since official support stopped at Android 10, the best way to revive your device is through a Custom ROM or a Generic System Image (GSI). 🚀 Draft: "Breathe New Life into Your Galaxy A9 2018"

Headline: Stop the Lag: Upgrade Your Samsung A9 (2018) to Android 14! 📱✨

The Hook:Is your A9 feeling like a relic from 2018? Between the bloatware and the outdated security patches, it’s easy to think it’s time for a trade-in. But before you spend $800 on a new phone, you need to see what this thing can do with a clean OS.

The Fix:By ditching Samsung’s old One UI and moving to a Custom ROM, you’re not just getting a new version of Android—you’re getting:

Insane Speed: No more background "Samsung Services" eating your RAM.

Modern Features: Access the latest UI tweaks from Android 13 or 14.

Battery Boost: Optimized kernels mean less drain while you sleep. Top Recommendations for A9 (2018):

LineageOS: The gold standard for stability. While official support for the A9 (A920F) varies, unofficial builds often keep it alive on LineageOS 21 (Android 14).

Evolution X: If you want that "Pixel-only" feel with extra customization, this is a community favorite for performance.

GSI (Generic System Images): Because the A9 supports Project Treble, you can technically flash almost any modern GSI (like Pixel Experience or Descendant) directly onto the system partition.

Pro Tip:Before you dive in, make sure your bootloader is unlocked and you have a custom recovery like TWRP or OrangeFox ready to go. Quick Compatibility Check Official Support Ended at Android 10. Project Treble Supported (allows for GSI flashing). Best Source XDA Developers Samsung A9 Forum.

⚠️ Note: Flashing a custom ROM will trip your Knox counter, meaning Samsung Pay and some banking apps may stop working unless you use a root-hiding tool like Magisk.

Samsung Galaxy A9 2018 (model SM-A920F) is a unique device in Samsung's history, famously being the world's first smartphone with a quad-camera system. While its official software support peaked at Android 9.0 Pie

with Samsung Experience 9.0, the custom ROM community has extended its life significantly. The Appeal of Custom ROMs for the A9 2018

For owners of this legacy device, custom ROMs offer a way to bypass the performance degradation and security vulnerabilities of outdated stock firmware. By installing a custom operating system, users can: Access Modern Android Versions Based on: Android 13 with Pixel Goodies Stability: 8

: Bring the device up to Android 13, 14, or even newer through community-developed builds. Remove Bloatware

: Replace heavy Samsung skins with clean, lightweight versions of Android like AOSP-based Improve Performance

: Achieve better optimization and benchmarks (like AnTuTu) compared to the original One UI. Popular ROM Options While official support for major ROMs like Pixel Experience

ended in early 2024, users can still find stable, unofficial builds or alternative projects:

: Known for its stability and "stock Android" feel, it is often the go-to for older hardware. Evolution X

: A popular choice for those wanting a Pixel-like interface with extra customization features and performance tweaks. GSI (Generic System Images)

: Because the A9 2018 supports Project Treble, users can flash universal "GSI" ROMs which allows for a wider variety of modern Android versions beyond device-specific builds. Technical Prerequisites and Risks

Transitioning to a custom ROM is a technical process that requires several critical steps: How to Install a Custom ROM on Any Android Phone (Example

For the Samsung Galaxy A9 (2018) Go to product viewer dialog for this item.

(model SM-A920F), official software support ended with Android 10 . However, active community development continues through unofficial custom ROMs and Generic System Images (GSIs), which can bring modern versions of Android to the device . Current ROM Availability

AOSP/Unofficial ROMs: Projects like Evolution X have unofficial builds for Samsung devices as recent as April 2026, often offering Android 14 or 16-based features .

LineageOS: While there may not be an "official" LineageOS build for the A9 2018, it is a primary candidate for GSI (Generic System Image) installations .

GSIs: Because the A9 2018 is Project Treble compliant, you can flash GSIs to experience clean Android 12, 13, or 14 . Core Technical Challenges

Locked Bootloader: Samsung devices require unlocking the bootloader before any custom software can be installed .

Custom Recovery: You typically need TWRP (Team Win Recovery Project) to flash ROMs . However, newer methods allow for flashing GSIs using Odin by packing them into LZ4 compressed archives .

Encryption & Security: Modern ROM installations on Samsung often require disabling Verified Boot (vbmeta) to allow the device to boot modified firmware . General Installation Framework How to Install a Custom ROM on Any Android Phone (Example

Part 3: Step-by-Step – How to Install a Custom ROM on Samsung A9 2018

This process is intermediate-level. Work slowly and carefully.

Part 4: Best Custom ROMs for Samsung A9 2018 (Updated 2024-2025)

After scouring XDA Developers and Telegram groups, these are the most stable and active custom ROMs for the A9 2018.

Chapter 1: The Smartphone with Four Eyes

In October 2018, Samsung made history. They announced the Galaxy A9 (2018), the world's first smartphone with a quad-camera setup. It was a sleek device, featuring the new gradient "Lemonade Blue" finish and the respectable Snapdragon 660 processor.

For consumers, it was a glimpse into the future of mobile photography. But for the hardcore Android community—the tinkerers, developers, and ROM enthusiasts—the A9 represented a puzzle waiting to be solved. The hardware was good, but the software, Samsung Experience (later One UI), was heavy. Enthusiasts dreamed of stripping away the bloatware to run pure, lightweight Android.

However, this dream would face a formidable enemy.