How to Fix iPhone Screen Dim when Hot

Published by Technastro on

Using an iPhone would mean that you have definitely had an experience with your iPhone heating up at least once. It’s actually a pretty normal thing and there could be lots of reasons behind that. If you’re not okay with the fact that your iPhone’s screen gets dim every time it gets hot, keep on reading to find out what to do.


Why Does my iPhone Screen Dim When hot?

The main reason why your iPhone screen gets dim when it’s hot is because your iPhone is trying to cool itself. If you have been using your iPhone for a long time, it will certainly begin to cover heat. When your iPhone starts to get hot or overheat, there are a few things that could be the root cause of it.

It can be that you have a lot of apps running on the background of your iPhone, you may have also been using your iPhone for a long period of time with no breaks in between and your screen’s brightness is way too high. These are just a few reasons why your iPhone gets hot. One thing to note is that when your iPhone gets hot, it becomes dangerous for the hardware of your iPhone, especially your battery.

To save your iPhone from developing any issues due to overheating, it dims the brightness to reduce the amount of energy produced by your iPhone and in turn try to cool it down. Like mentioned, this helps save your iPhone from any issues that might arise from overheating.


Can You Fix iPhone Screen Dim When Hot?

A lot of people do not like to stress their eyes while looking at the screen of their iPhone. The lower the brightness, the harder it is for them to actually see. When their iPhone automatically dims the screen’s brightness when it gets hot, it pretty much annoys them.

The next line of thought will be to try and fix this issue. Is it actually possible to fix your iPhone’s screen when dim? You absolutely can. If you’re looking for the answer on how to fix screen dim on an iPhone when hot, keep on reading to find out.


How to fix iPhone Screen Dim When Hot

The issue of your iPhone’s screen getting dim is a pretty common thing that happens to a whole lot of people. While it might be a normal thing for your iPhone, it isn’t always welcomed. Here’s what you need to do to fix your iPhone’s screen dim when it gets hot:

Turn off low power mode:

One of the first things you will need to do is to turn off the low power mode settings on your iPhone. Low power mode is a feature that actually limits a lot of activity on your phone in order to save your iPhone’s battery.

The dimming of your iPhone’s screen is one of the effects of low power mode being turned on. What you need to do is navigate through the settings app on your iPhone and toggle it off. Here’s what you need to do:

  • Open the settings app on your iPhone.
  • Scroll and tap on “general”.
  • You should see an option for low power mode. Tap on it to toggle it off.

Disable auto-brightness:

After carrying out the first step, the next thing you might want to do is to turn off the auto-brightness features on your iPhone if it isn’t turned off already. 


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  • You will need to launch the settings app on your iPhone.
  • Scroll down the list of options and tap on “accessibility”.
  • On the next screen, tap on the option that reads “Display & text size”.
  • Scroll down the next screen and toggle off the auto-brightness option.

Turn off screen zoom:

To fix the way your iPhone dims its screen brightness, you can also choose to turn off the screen zoom feature on your iPhone. This feature always tampers with the brightness of your screen and here’s what you need to do to turn it off:

  • Launch the settings app.
  • On the next screen you have to tap on “accessibility”.
  • You will see a list of available options, you only have to tap on “zoom”.
  • On the next screen tap on “zoom” again to successfully toggle it off.

Toggle off the reduce white point feature:

The reduced white point is a common feature found on your iPhone that helps in making the display of your screen to become smoother for your eyes in order to protect them. Since this feature works on protecting your eyes, it works hand in hand with your iPhone to dim its brightness. Here’s what you will need to do to turn off this feature:

  • Open the settings app.
  • Tap on the “accessibility” option.
  • On the next screen, tap on “display text & size”.
  • You will see the “reduce white point” option on the next screen. Tap on it to toggle it off.


My iPhone’s Screen Still Dims When Hot, What Do I Do?

If you have followed all the steps above and your iPhone’s screen still dims when it gets hot, it might be due to an unknown bug. One of the best solutions to this problem is to reset the settings on your iPhone. Here’s what you should do:

  • As usual, open the settings app.
  • Tap on “general”.
  • Scroll down to the bottom of the screen and you will see the “reset” option. Tap on it.
  • On the next screen, tap on “reset all settings”.

Is It Okay to Fix the Dimming of My iPhone’s Screen When Hot?

At the beginning of this article, we stated the reason why the screen of your iPhone gets dim when hot. It is because your iPhone is trying to cool itself. Your phone heats up when you’ve been using it for a long time and if you have numerous apps running at the same time.

Screen brightness also plays a major role in heating up your iPhone. To stop this overheating, your iPhone dims the screen to try and reduce the amount of heat generated and cool down. This is to save your phone from developing any issues due to overheating.

An issue that might occur from the overheating of your phone can be reduction in the overall quality of your battery. When your iPhone overheats for a long time, it affects your battery. It dims your phone to cool down and avoid this from happening.

It is okay to fix the dimming effect on your iPhone’s screen when it’s hot but you should try as much as possible to avoid getting your iPhone to the point where it overheats. It damages your iPhone and its batteries. Reduce the amount of apps you have running and do not expose your iPhone to direct sunlight.



With the above steps you should be able to fix the screen dimming issue of your iPhone whenever it gets hot. The steps are pretty easy and straightforward to follow, if they do not work, it is recommended that you try resetting your iPhone’s settings. You should also try to reduce the amount of stress you put your iPhone through. This will help reduce the chance of your iPhone overheating and developing any issue.



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