Snapchat notifications may not work on an iPhone due to disabled notification settings, incorrect app permissions, poor internet connectivity, or system-level restrictions like Focus mode or Low Power Mode. Users should ensure notifications are enabled both in the iPhone settings and within the Snapchat app, check background app refresh, verify network connectivity, and update the app and iOS to the latest versions. In some cases, reinstalling the app or resetting system settings can resolve persistent issues, as these problems are often caused by configuration conflicts rather than hardware faults.

References