＠Engineer Apple Thank you for your reply. Where can I find documentation about Bluetooth (BLE), especially documentation that describes the limitations on background processing? https://developer.apple.com/library/archive/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/CoreBluetoothBackgroundProcessingForIOSApps/PerformingTasksWhileYourAppIsInTheBackground.html I have checked the document, but there is no information about the creation date, target OS, or limitations, so I would appreciate your help.

I am developing an application using Swift+CoreBluetooth on an iPhone 16 (iOS 18) with the original device's Bluetooth peripheral. I have confirmed that it generally works in the foreground (receiving 60 bytes of data at 100Hz intervals), but I am unsure whether it will work in the background on iOS 26 (since I don't have a device), so I would like to ask here. Will it be possible to run it in the background on iOS 26 or later due to security and power issues?