iOS10 intermittent black screen issue Recently upgraded my iPhone 6 Plus to iOS 10.  Soon after upgrading I started to notice a intermittent issue where the phone would randomly jump to a black screen with a white loading spinner in the middle (similar to what you see when shutting the phone down) and then after about 5 seconds it will take me back to the lock screen.  I'm still able to unlock the phone using the fingerprint reader (so the phone hasn't actually rebooted) and the phone appears to function as per normal.  

It is extremely annoying as it can happen in the middle of any phone function (including taking and making calls) and on some days can happen more than half a dozen times.  

So far I have noticed it happening when using the following Apps:


Google Chrome 
Microsoft Outlook App 
Facebook App 
Apple Music App (completely stopped a playing track at the time)


Not sure if it's just random or being triggered by particular apps.  When it happens whilst Google Chrome is open the next time I open Chrome it reports that Chrome crashed and "would I like to restore my pages?".

I haven't done a fresh iOS 10 install but I'm reluctant to do this as it takes time and risks my data and setup on the phone now (even though I do have a iCloud backup).

I have also since upgraded to iOS 10.0.2 (14A456) but the problem still remains.  

Is there a way to view diagnostic, error or event logs on the OS to see what might be happening immediately before the black screen occurs?

Anyone else experiencing the issue?
My recommendation is to do a restore to factory settings and then dont restore the backup and see if the issue persists. I read the comments and saw that you had the device replaced and that the issue persisted once you restored the backup. Apparently there is some app data that is corrupt in your backup that is causing the issue. I urge to just set up the iPhone as new, and then dont restore the backup. If you need those apps back, all you have to do is login to both iCloud and iTunes &amp; App Stores in settings (iOS 11 click on your name above). Next go into the App Store app and then look for updates, and then click on your profile icon (iOS 11) and then look for purchased apps (or purchased). In both lists are your recently purchased/downloaded apps. If you used another account then those apps may be on that other account.