What changes will occur in the timer's operation when minimizing or collapsing the application?

When minimizing or minimizing an iOS app, timers such as Timer (NSTimer) are usually paused or run with delays. This is because the system puts the app into the background, where code execution is limited to conserve resources and battery. As a result:

• Timers may not fire on time or may be paused altogether.
• If you need to perform tasks in the background, it is recommended to use background tasks (Background Tasks), DispatchSourceTimer with proper configuration, or Background Fetch.

Example: if you have a timer that updates the UI every second, when the app is minimized, updates will stop until it returns to active mode.