Go to and tap Build Number seven times to unlock Developer Options.
LineageOS natively supports the Zenfone 9's side-mounted fingerprint scanner, 120Hz high-refresh-rate toggle, and headphone jack. Custom gesture mapping allows you to configure the smart key (power button) to drop down the notification shade or launch specific apps, preserving the device's ergonomic utility. Potential Drawbacks and Troubleshooting asus zenfone 9 lineage os
: Ensure your Zenfone 9 has at least 60% battery life to prevent shutdowns mid-process. Go to and tap Build Number seven times
Banking apps, Google Pay, or high-security applications may fail to run out of the box due to the unlocked bootloader. Resolving this requires rooting with Magisk and applying specific play integrity fix modules. As of early 2026, the ZenFone 9 is
As of early 2026, the ZenFone 9 is listed on the official LineageOS devices page. The most recent Asus devices with official support are the ZenFone 5Z (LineageOS 22.2) and the ZenFone 8 (LineageOS 23.2). Therefore, any LineageOS build for the ZenFone 9 falls into the “unofficial“ category. That does not mean it is unstable or unsafe. Many of the most beloved custom ROMs for niche devices start as unofficial projects before eventually (or not) gaining official status.
became the center of a major controversy when Asus disabled its unlock tool in 2023. Recent discussions on community hubs like