It seems that the problem with iBeacons in iOS 10 detects the work of iBeacons, but most of the time they get it for proximity and accuracy.
The problem arises in both Swift and Objective-C. The iPad Air, iPhone 6 and iPod Touch seem to have this problem in my case (a few weeks ago we managed to make a demo with the same code, and it worked fine under iOS 9), so we assume that it is iOS 10 (GM) .
This may also be due to advertising beacons at a speed that does not exceed 200 ms.
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