iPhone screen dims randomly

I just figured that iOS 11 has not only one but 2 Auto-Brightness settings options. My problem was more nonrelated with temperature (changing brightness while reading a book, just like with your wife) and after checking everything that it has been said on this thread (and on another one) I figured out that I had one turned on and the other one off. I have been using for a couple of hours now and it seams that the problem is solved.

Here’s some trouble shooting tips on how to reduce battery usage.

settings> General> background app refresh and disable any apps that you don’t want active in the background when your not using the app.

go to settings> General> accessibility> Reduce motion and turn that on, be aware that turning that on will disable weather animations through the apple built in weather app.

go to settings> Passwords and accounts> Fetch new data and fetch data hourly.

go to settings> Control center> Customize controls and delete any controls you don’t want in the control center since this will reduce usage of the interface every time you pull down the control center.

i hope this helps and please let me know if you need help with anything else.

Turn of your True Tone from swipe down menu. It should stop changing.

My iPhone X dims on its own even when the auto dim settings are off. I brought the phone to the Apple store, they ran some diagnostic, it came up clear of issues and they even reset it. I still have the problem. On top of that, if I’m in iMessage and I type quickly the iMessage app will close and a random app will pop open. There’s no rhyme or reason.

I agree 100% with you that it is a software issue. As stated earlier in this growing thread my wife’s phone, iPhone 6 dims all on its own too.

Hoping Apple finally sees this is a bigger issue as the engineers are fully aware of this problem and they even have video of my screen dimming.

Question for anyone out there, have you noticed the screen returning to normal if you let it be? An example, I was running Waze and the screen dimmed. I let it be, continued to run Waze and after 10 minutes the screen slowly returned to normal brightness. I could see it slowly return to full brightness. Just puzzles me that this is occurring and I bet it happens to the majority of phones but people either don’t care or realize what’s happening so they are not reporting anything.

Same problem here, and now it’s about 7 months talking to apple trying to figure out my problem.

i already changed my screen, and the phone.

nothing change.

so I went the apple headquarters in Cupertino and a employee told me:

-There’s no way to fix that because is a built in feature.

just for the record my settings👇

[Edited by Host]

Like the ms009986 said I already posted the same thing 93 times and guess what, I'll post 93 times if necessary.

Because i spend 7 months trying to figure out with apple a solution for this problem, was a tons of phone calls and a tons of store appointments.

First they changed my screen and nothing, after they give a brand new phone and nothing again, at this point I was VERY UPSET because the reason I decided spend a thousand dollars in a phone was looking for a perfect experience.

So I decide to call one last time and let they know how upset I was and that I demand a phone from apple that don't change the brightness for itself, the senior guy ( after 7 months ) told me that this is a built in feature you can't control and after the iPhone 6 every iPhone has this built in feature, and he did more, he said that all brands has the same built in feature, guess what I upgraded to a android phone ( note 9 ) and the screen is always at the brightness level that I stipulate.

Don't wasted your time and patience with this company they don't deserve it.

Thanks joannatamasm. I set my magnifier to off and it actually worked. I was going to go back in and turn magnifier on and then off again to reset it if it hadn’t worked the first time. Appreciate you sharing. Now to Apple....is there any way to block individuals on this discussion that abuse the service and blow up our notifications because they are angry?

Same issue here, doesn't solve it.

I have the same problem... Just purchased it 7 days ago

Mountain-marimba wrote:

CVS drugstore has an app that displays a barcode on your phone

I use this app as well. My iPhone X has no brightness / dimming issues, but the clerk also has trouble scanning the barcode. I believe their scanner requires a very precise angle and somewhat precise distance for the barcode to be presented and recognized.

I have been in touch with Apple and they escalated my issue to the engineers. They requested analytics information from my phone and will be getting back to me Friday 4/13/18.

Once I hear back I will post my results. I’ve tried turning off auto brightness and that did not help.

Hopefully they will have an answer.

I have the same issue… I just got a brand new iPhone 10 and it is doing the same thing as my old phone. I’ve been on the phone with Apple tech-support for three days… This is so frustrating! I cannot use this phone outside… I cannot see the screen in the sunlight because it dims.

That’s what they tell everyone. They’ll run a diagnostic, say the phone is working fine, they’ll check your settings that won’t be causing the issue, they’ll tell you to go home and see if the issue continues. It will continue and you’ll find yourself aggrevated yet in an effort to have a phone with a display that you can easily see with you’ll go back to the store, they’ll replace the phone and you’ll go home only to discover you have the same issue as before.

There's no way to fix this problem, this is a built in feature.

No matter if you turn off every options related to brightness or color, the phone will continues change the brightness for itself.

The only solution is upgrade to android, I highly recommend the note 9.