Upgrading a device from Android 4.4.2 (KitKat) to Android 9.0 (Pie) is a major leap that usually requires unofficial methods, as most manufacturers stopped official support for KitKat-era hardware years ago. While you can check for in your settings, moving to Android 9 typically involves installing a Custom ROM . Method 1: Checking for Official Updates
If no official update exists, the only way to reach Android 9.0 is through a like LineageOS or Pixel Experience. upgrade android 4.4.2 to 9.0
While the manufacturer has moved on, the open-source community has not. The only way to get Android 9.0 on a device built for 4.4.2 is to install a . Upgrading a device from Android 4
Download the TWRP (Team Win Recovery Project) image specific to your device. Connect your phone to a PC and use ADB (Android Debug Bridge) tools to flash the recovery. While the manufacturer has moved on, the open-source