iOS 13.5 & 13.5.1 iPhone X Restarting

Thanks but that's not helpful. Updates do not give any meaningful technical detail, I'm not looking to debug Apple's product release and, anyway, they never deliberately include any update designed to cause your device to restart randomly.

I'd be grateful if you would stop responding to this post.

Now found that Photos on iPhone no longer syncs properly with iCloud and my car now informs me that I need an Internet connection before playing music that I own and is physically loaded on the phone - that's new too.

Looks like 13.5 / 13.5.1 release needs some serious remedial work by Apple

On a hunch I uninstalled Norton security on my iPhone (a recent addition but before the 13.5 upgrade). Since then my phone has stopped restarting!

Thanks but the OS is up to date and, as stated, the battery is fine. This help did not solve the problem.

I'd like to know if anyone else is having this issue.

Mine also can't be restarted once it has shut down. It does restart itself after several minutes. I have done a complete factory reset and restore. Still the same.

Removing Norton security also cured the issue relating to playing music in the car and the Photos sync issue!

All is well again.