App review - bluetooth accessory

It will depend on your app design and the mood of the reviewer. In my case, I have been submitting BLE apps for about 2 years now and I never heard any questions or requests from the reviewers concerning the BLE function. When I first submitted the app for review I included a short video showing how the BLE functions worked. I showed all the view controllers and button behavior etc. Each time I submitted a new build I included this video. In the comments I explained that I could provide hardware if needed.