in iOS10, screen-off will call the DidExitRegion even if the iPhone is definitely beside the beacon
<p>When screen is on (no matter lock or unlock) , it works correctly for DidEnterRegion and DidExitRegion.</p>

<p>However, when screen is off, it's so weird that even there're no any changes for the beacon and iPhone, <strong>the app will receive the DidExitRegion call in several seconds</strong>. </p>

<p>Nevertheless, when the screen is on (by pressing the home or power button, or some notifications coming to enlighten the screen, no need to unlock), the app will immediately receive DidEnterRegion call afterwards.</p>

<p>Anyone found that and can help? Thx.</p>