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Not sure if this is the right place to put it, but if you guys have answers it's much appreciated. I have a BLE-enabled Arduino board that I want to use as a client to receive notifications from my iPhone 13 over ANCS. I can connect the board to the phone, connect to the service, and when checking characteristics all 3 that should be exposed are exposed; however, attempting to subscribe to any fails. All the ANCS docs say on this is: So... how exactly do I authorize my Arduino to access these characteristics? Do I need to build an app to manipulate internal properties somehow? (There's a get-only variable in the CoreBluetooth docs that indicates this status, but no mention of how to set it - only that an authorization will set it to true.) I'm not receiving any authorization pop-up on my iPhone when this occurs, and it doesn't appear anyone else has had a similar problem - please advise!