iPhone 8 screen will not turn off automatically when not being used

Nope, did the 11.1.1 update last week, had to do a hard restart yesterday to again get my phone to auto lock. 😟

I notice there is another open thread on this issue here: https://discussions.apple.com/thread/8128889

I had the same iaaue. I have tried these steps but it doesn't help. After that i have hard reset the phone, following these steps:

1. Press down and quickly release the Volume Up button
2. Press down and quickly release the Volume Down button

Now pass and hold the side Power button, continue holding until you see the Apple logo  on screen

After that everything is ok! Now it auto locks after 30 seconds as i have set it up. Hope this will help you!

Given this seems to take about 2 weeks to re-emerge I think it's a bit premature to conclude the latest update (11.1 is only out a few days) has fixed it.

I hope so (and that it hasn't broken anything else ).

Yes, the same problem for me since I got the update on iOS , I restarted to fix the issue but the problem still exists. When contacted apple chat support they were ready to do all basic troubleshooting but I was fed up already about that process. Recently I raised 2 more bugs, one cracking noise, speaker issue when you keep full volume the touch screen will feel like vibrating when you touch and call drops without signal issue.

I have the same issue and restarting fixes it for a few days and then the process starts again.

I see that the answer from apple says that they have solved your original question does that mean they are not looking into this anymore and assuming its fine?

This is not a solved issue.

This issue keep occurring after a few weeks and the phone has to be reset again.

This NEEDs to be fixed by Apple ASAP it’s a ridiculous Either IOS 11 fault or IPhone 8 fault

Hi - can you confirm if this also happens with the latest ios 11 update (11.1)? I haven't noticed it yet with 11.1 but it normally happens after a few weeks on my wife's phone - so its not been out long enough for me to conclusively say.

What version of ios do your phones have? I think I did see it with 11.0.2.

I have the latest iOS installed (11.1.1) and I still see my phone not auto-lock from time to time. Restarts, etc., are a temporary fix but the problem always comes back. This is very annoying, a security issue, and a sever battery drain issue.

The other thing I've noticed is that it is not an issue on my iPhone 6s Plus but only on my iPhone 8 Plus. Makes me wonder if it is a hardware issue.

I had hoped that iOS 11.1 might fix this problem but it's now failed 10 days after installing that update and restarting.

Now there is 11.1.1 - but it makes no mention of this fix.

My wife needs to ensure her phone is secure and this clearly isn't being given any significance.

I fear the phone may have to go back.

I will try raising a radar if I get a moment.

My Iphone 8+ does not turn off automatically , I have to do it manually , it's not the settings, it's the phone, yes it works fine if I shut it down and restart it but I have to do it every week, very annoying, I hope you fix this problem soon.

I've tried submitting a bug report to Apple, however I wasn't able to include any log files as the phone has been rebooted to overcome the security implications of the problem - so I will have to wait until next time.

Possibly someone who next gets the issue might be able to nab the required log files.

https://bugreport.apple.com/web/?problemID=35503884

Same issue, iPhone 8, shut down solves for a few days and then it's back. If I look at battery usage in settings shows 65% being used by home and lock screen. Raise to wake off, auto-lock 1 min. Auto-lock, that's a laugh!!

My lock and home screen pictures are from before the iPhone 6s Live Photos and do not have any animation. This is definitely not my issue. Still having the same problem. Still waiting on Apple’s solution.

One week since last hard restart and it happened again over night. Don't think it had anything to do with an app being opened - did not use any apps last night. Please Apple - you are making me regret trading in my 6 for this 8 - never happened with my iPhone 6 - ever.