LineageOS remains the gold standard for custom ROMs. In 2026, LineageOS 22.1 (based on Android 15/16) is highly anticipated for the SM-A045F.
After booting the GSI, you will face bugs. Fix them:
It provides a lightweight system UI that significantly optimizes RAM usage, which is critical for the A04's hardware.
Download GSI binaries matching your specific variant architecture (typically ARM64 Binder64 for the Galaxy A04). Step-by-Step Installation Guide samsung a04 custom rom best
: Based on LineageOS but adds dozens of customization options. It is highly recommended for users who want to tweak every part of the UI.
or crDroid A13 . Avoid Android 14 builds if you need VoLTE for calls.
With the phone off, enter Download Mode (both Volume buttons + connect USB). Open Odin on your PC and disable "Auto Reboot". Click the "AP" slot and select your TWRP .tar file. Click "Start". Once Odin says "PASS!", disconnect the phone and force a reboot into recovery immediately (Power + Volume Up) before the system restarts. LineageOS remains the gold standard for custom ROMs
This is Android in its rawest, most skeletal form. There are no added customization menus, no pre-installed apps, and no heavy frameworks.
: Go to Settings > Battery and Device Care > Memory > RAM Plus to add up to 4GB of virtual RAM, which helps the A04 handle multitasking better.
Leaner code means less background drain, maximizing your daily battery performance. Fix them: It provides a lightweight system UI
: Unlock features not present in One UI, such as advanced theme engines, custom vibration patterns, and specialized status bar tweaks. Essential Pre-Installation Steps
Users who play mobile games and want a themed, fast experience. Important Pre-Requisites
The Samsung Galaxy A04 (SM-A045) is a capable budget device, but like many entry-level phones, it can suffer from performance limitations due to Samsung’s heavy One UI Core interface. By 2026, many users are looking to breathe new life into their A04, reducing lag and enhancing battery life. Installing a custom ROM is the ultimate way to achieve this.
Before you take the plunge, it's essential to be aware of the common challenges and risks: