iOS 10 Black Screen Spinning Wheel

Been using iOS 10.0.1 for about a week on an iPhone 6 and it's buggy. The issues below have only occurred since upgrading to iOS 10. Please fix in next release or provide solution.

1. Random black screen with spinning wheel. The upgrade went fine, so not that black screen. But at least daily my phone becomes unresponsive and shows a black screen with spinning wheel. After 5-10 seconds I'm prompted to enter my passcode as if the device has restarted. I'm not the only person experiencing this - and even managed to capture the image below.

2 - I've enabled the 'rest finger to open' option under home screen accessibility, but this doesn't always work. Again, about once a day, resting my finger to open results in me being prompted to press the home button to unlock. Each time this has happened I've checked and confirmed that the 'rest finger to open' option was enabled.

Thanks