What consequences can arise from prolonged loading of the application's main thread?

Prolonged loading of the main (UI) thread in Android leads to several negative consequences:

• Interface freezes (ANR - Application Not Responding): if the main thread is busy for too long, the system considers the application unresponsive and may show a dialog suggesting to close the app.
• Poor user experience: the interface stops responding to user actions, causing frustration.
• UI rendering delays: animations and screen updates may slow down or disappear.

Therefore, heavy operations (such as network requests, database work, complex calculations) should be performed in a background thread, and the main thread should be used only for UI updates.