To clarify my setup: The peripheral app has bluetooth-peripheral in its Info.plist. The central app has bluetooth-central in its Info.plist. In my central app, I’m passing the CBConnectPeripheralOptionNotifyOnConnectionKey: true option when calling centralManager.connect after discovering the peripheral: func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) { if let peripheralName = advertisementData[CBAdvertisementDataLocalNameKey] as? String, peripheralName == "test-device-1" { // Stop scanning to save power centralManager.stopScan() // Save a reference to the discovered peripheral self.discoveredPeripheral = peripheral let options: [String: Any] = [ CBConnectPeripheralOptionNotifyOnConnectionKey: true] // Connect to the peripheral centralManager.connect(discoveredPeripheral!, options: options) } else { print("No peripheral discovered to connect to.") } } However, when I move the central app to the background and toggle Bluetooth off/on in Settings, the peripheral reconnects, but I’m not seeing the expected alert. Am I missing any steps, or is there another way to verify this behavior?

Thank you for your response. To clarify my setup and issue, I have removed the bluetooth-central key from my plist. Here's what I'm doing to test the system alert behavior: Initially, I connect my central to the peripheral. After the connection, I move the central app to the background. Then, I turn off Bluetooth on the peripheral (which disconnects the central from the peripheral). Afterward, I turn Bluetooth back on in the peripheral (which should trigger it to re-advertise). However, even though the peripheral is re-advertising and the CBConnectPeripheralOptionNotifyOnConnectionKey option is set to true, I'm not seeing the system alert. Could you please help clarify why the alert is not appearing under these circumstances?