Upgrade Android 4.4.2 To 9.0 Now
Note: This is a general guide. Steps vary wildly by device model.
If an official update exists for your specific device, you can find it here: About Phone System Updates Check for Update upgrade android 4.4.2 to 9.0
Here is the general, technical procedure to attempt this upgrade. Prerequisites Note: This is a general guide
Android 9.0 is significantly more demanding than KitKat. Before attempting an upgrade, ensure your device meets these minimum technical requirements : Prerequisites Android 9
Upgrading from Android 4.4.2 to 9.0 is a project. It is not a simple button press. It requires research, technical courage, and a willingness to potentially break your device.
To get Android 9.0 on a KitKat-era phone, you need a – a community-built version of Android. The most popular choice is LineageOS 16.0 (the custom ROM based on Android 9 Pie).