I have already added the key in info.plist file i.e. "NSBluetoothAlwaysUsageDescription".
Other than this what change we need to do in ReadValue function? on iOS 12 we get response from ReadValue function, but not on iOS 13.
I find the solution for the problem is that NSData format is changed in latest iOS 13. please refer the link for more information.
Have you checked the instruction in the video : https://developer.apple.com/videos/play/wwdc2019/901/?
Thank you for this video. I have gone through this, but there is nothing helpul in this regarding my problem.
Can you just tell me when I set characteristics called "TxCharacteristic_NotifyOnly" it has some unique GUID, then running the code on iOS 12 it is invoked by our BLE device and the same is not happening on iOS 13.
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