We've carefully reviewed the part you mentioned. However, our issue currently only occurs on the iPhone 17. The app sits in the background, scanning and connecting to nearby BLE devices. Currently, on the iPhone 17, the BLE scanning stops immediately as soon as the app is outside, and it barely scans a single BLE device until it starts again. We'd like to ask for a solution to this issue. Device up to the iPhone 16 In CBCentralManager scanForPeripherals( withServices: [my_uuid], options: [CBCentralManagerScanOptionAllowDuplicatesKey: true] ) When you make a call, you can continue to receive surrounding scanning, either quickly or slowly, even if the app goes into the background, but on the iPhone 17, scanning stops immediately.

@Engineer I submitted a bug report. FB20381425

@Engineer https://developer.apple.com/documentation/corebluetooth/cbcentralmanagerdelegate/centralmanager(_:diddiscover:advertisementdata:rssi:) optional func centralManager( _ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber ) On iPhone 17, this method does not work when the app enters the background.

@Engineer I've also attached an iOS system diagnostic to the additional information sent. If it doesn't work, I'll create another bug report and submit it.

@Engineer I changed my Apple ID on my iPhone 17 and sent sysdiagnose again.