iOS ANCS and GATT Service Changed Characteristic

App & System Services Core OS
cyberneel OP
Created 1w
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I am working with an open source watch called PineTime to implement ANCS support so users can receive iOS notifications in the watch.

I am having g trouble discovering the ANCS on an iOS device. The watch is properly paired and bonded. I realize that the ANCS may not always be present, so I also subscribed to the GATT Service changed characteristic, but never received a notification/indication for a service becoming active.

Is there something I am missing? Thanks!

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Engineer OP
Apple
4d

There isn't anything you're missing based on your description here. ANCS is not going to be available all the time, and the Service Changed Characteristic will notify when the availability changes.

This is probably some implementation issue on the accessory side, which unfortunately we won't be able to assist with directly.

Argun Tekant /  DTS Engineer / Core Technologies

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iOS ANCS and GATT Service Changed Characteristic
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