Will the mobile phone receive a reminder when it detects power failure?

If the surveillance camera is turned off, the phone will not receive a reminder.

When the monitoring camera is powered off, the whole monitoring system will stop working, including communication with the mobile phone. Therefore, the mobile phone can't receive the signal from the surveillance camera, so it can't receive any reminder about the power failure of the surveillance camera. Only after the monitoring camera is plugged in and restarted can the mobile phone receive the signal of the monitoring camera again and display the monitoring image. This means that during the power failure of the surveillance camera, the mobile phone cannot receive any monitoring-related reminders.