If the Android-stuck-on-boot-screen issue is gone and the device is no longer stuck in the startup screen, you can assume that the cause of the problem is due to a bad system cache.

When you boot up a Pixel smartphone, you’ll typically see either a stark white or a dark screen, but that will soon change. Previously, the Pixel’s boot animation showed up with a white background, ...

Originally expected to arrive with Android 12L, Google’s work to match the color of the boot animation to the colors picked by Dynamic Color in Android 12 is live on Pixel 3a/XL, Pixel 4/XL ...