At its core, the argument for Lineage OS on the Zenfone 9 begins with longevity. ASUS has historically offered a modest update policy—typically two major Android version upgrades and two years of security patches. For a device powered by the Snapdragon 8+ Gen 1, a chip capable of remaining competitive for half a decade, this software lifecycle is artificially restrictive. Lineage OS, a continuation of the legendary CyanogenMod, shatters these corporate boundaries. By flashing the official Lineage OS 20 or 21 build (based on Android 13 or 14), the Zenfone 9 transcends ASUS’s timeline. The phone becomes immune to planned obsolescence, receiving security patches and feature updates years after the manufacturer has moved on. In an era of e-waste crises, this is not just a convenience; it is an environmental and economic statement.
For users on supported devices, LineageOS remains a popular choice because it is: asus zenfone 9 lineage os
I finally took the plunge and unlocked the bootloader on my Zenfone 9. Here's my experience after 7 days on the latest Lineage OS 22 (Android 15): At its core, the argument for Lineage OS
ASUS disabled their official unlock servers in November 2023 . While they initially claimed it was for maintenance, they later confirmed the tool is discontinued for all models released before 2024. Lineage OS, a continuation of the legendary CyanogenMod,
For enthusiasts looking to extend the life of their device, strip away bloatware, or reclaim privacy, LineageOS remains the gold standard. Here is everything you need to know about the current state, installation, and performance of LineageOS on the Asus Zenfone 9.
Guide used: [Link to XDA thread]