You will not get Asus Camera automatically. You must sideload two APKs:
⚠️ Gimbal Stabilizer: The physical gimbal works for OIS, but the specialized "gimbal mode" with horizon lock is gone. ⚠️ AudioWizard: Asus's custom DSP (Dirac) is not present. You have standard AOSP EQ. ⚠️ LED Indicator: The tiny notification LED works, but you cannot control the charging light behavior as granularly as ZenUI. ⚠️ DT2W (Double Tap to Wake): Works, but sometimes has a 0.5s lag compared to stock.
1. Extended Longevity & Security The most compelling reason. While the official ZenFone 9 is stuck on Android 14 (or older depending on your region), Lineage OS 22.1 is already shipping Android 15 (and preparing for Android 16). You will receive monthly security patches directly from the Lineage OS team. Your $700 phone doesn't become e-waste just because Asus stopped caring.
2. Pure, Bloat-Free Speed Asus ZenUI is actually one of the better OEM skins. It’s light, close to stock, and offers useful customization (like the edge tool and always-on panel). However, it still comes with Asus apps, duplicate Google apps, and background services you might not want. Lineage OS is minimalist. With no carrier junk, no duplicate calendar/contacts apps, and no performance-throttling "optimization" engines, the Snapdragon 8+ Gen 1 feels genuinely unleashed. App launch times feel snappier, and RAM management is more predictable.
3. Customization & Privacy Lineage OS includes features that even Pixel phones lack:
If you miss the bass boost, you can flash a Magisk module called Dirac_Sound_For_Zen9. This re-injects the Asus AudioWizard libraries. It's not official, but it works well.
Have you installed Lineage OS on your ZenFone 9? Share your experience in the comments below. asus zenfone 9 lineage os
The ASUS Zenfone 9 is a fan favorite for its rare combination of flagship power in a compact form factor. However, for enthusiasts looking to extend its lifespan or de-Google their experience, the ASUS Zenfone 9 LineageOS situation is currently complex due to significant roadblocks from the manufacturer. The Current State of LineageOS on Zenfone 9
As of mid-2026, the Zenfone 9 does not have an official LineageOS build. While unofficial builds and GSIs (Generic System Images) have existed in the community, the biggest hurdle for most users is the inability to unlock the device's bootloader— a prerequisite for any custom ROM installation.
Official Discontinuation: ASUS officially discontinued its bootloader unlock tool for models released in 2023 or earlier, including the Zenfone 9.
Server Shutdown: The APK-based unlocking method that users relied on in the past no longer works because ASUS disabled the required activation servers.
Paid Alternatives?: There have been reports of users being offered paid bootloader unlocking services through official ASUS service centers in some regions (approximately $200), though this is not a globally standardized or consumer-friendly option. Why Install LineageOS on Your Zenfone 9?
If you managed to unlock your bootloader before the servers were shut down, LineageOS offers several distinct advantages over the stock ZenUI: You will not get Asus Camera automatically
Installing LineageOS on the Asus Zenfone 9 is currently a complex task due to significant roadblocks from the manufacturer. While the device's hardware is highly regarded, software freedom is restricted by the lack of an official bootloader unlock tool. ⚠️ Critical Prerequisite: The Bootloader Barrier
As of early 2026, the primary hurdle is that ASUS has discontinued its official bootloader unlock tool for the Zenfone 9.
The Status: ASUS removed the unlock tool from their website and disabled the servers required for it to function.
Current Reality: Without an unlocked bootloader, you cannot flash LineageOS or any other custom ROM.
Workarounds: Some users look for older firmware versions or unofficial XDA-developed methods, but ASUS has reportedly released updates specifically to block these exploits. 🛠️ Step-by-Step Installation Overview
Only proceed if you have already successfully unlocked your bootloader using a legacy or unofficial method. 1. Preparation Unlike some devices where ports are buggy, the
Backup Everything: Flashing a ROM erases all internal storage. Charge Up: Ensure the battery is above 60%.
Install ADB/Fastboot: Download the latest Platform Tools on your PC.
Get the Files: Download the LineageOS build and matching GApps (Google Apps) if you want the Play Store. 2. Enter Fastboot Mode Turn off the phone.
Press and hold Volume Up + Power until the bootloader screen appears. Connect the phone to your PC via a high-quality USB cable.
| Issue | Symptom | Fix |
| :--- | :--- | :--- |
| Encryption loop | Phone asks for password on boot, then reboots | Format data (not just wipe) in recovery |
| No 5G | Only LTE | Check APN settings. Dial *#*#4636#*#*, set preferred network to NR/LTE |
| Google Photos no backup | Says "Unsupported device" | Install Pixelify Magisk module or simply use a different cloud |
| OTA update fails | Update downloads but won't install | Boot into recovery manually, sideload the OTA zip from /data/lineageos_updates/ |
Unlike some devices where ports are buggy, the Zenfone 9 LineageOS build is "daily driver" ready. Here is what works and what makes it special: