iPhone Screen Dims When Hot: Best 5 Solutions

The major one is overheating and the rest are addressed in this guide with solutions to solve this problem.

There have been many user complaints over the iPhone’s automated screen dimming. Reasons like auto-brightness, TrueTone, Night Shift, and battery life enhancement are often behind this problem. But, there are other more significant hardware concerns, such as overheating, that may cause the phone’s screen to dim.

Here, we’ll take a look at the factors that cause your iPhone’s display to dim without your engagement, discuss the settings you may adjust to prevent this behaviour, and ultimately come to a conclusion on whether or not you should.

Is Your iPhone Hot?

Intense heat might cause your iPhone’s display to dim. This is an in-built protection mechanism to keep your iPhone from experiencing any hardware issues due to overheating. If your iPhone becomes too warm to the touch, set it down in the shade for a time before picking it up again.

Best 5 Solutions to Fix iPhone Screen Dimming Error

1:  Turn Off the Automatic Brightness

When the auto-brightness feature is activated on an iPhone, the device’s brightness is automatically adjusted in response to the surrounding lighting conditions. As a result, the screen’s brightness and contrast are reduced in low-light settings. So, the auto-brightness option may be to blame if your iPhone screen suddenly dims. Here is how to fix it:

  • Go to Settings
  • Tap on Accessibility
  • Next, Tap on Display & Text Size
  • Scroll Down to find Auto-Brightness and Turn off the toggle

3:  Disable TrueTone

To ensure that colours seem the same in varied lighting conditions, Apple included the TrueTone function with the iPhone 8 and later models. It is not always reliable and may lead to unpredictable changes in the iPhone’s display brightness and colour. You can test whether the problem still exists when you disable TrueTone.

  • Go to Settings
  • Go to “Display and Brightness
  • Next, Turn Off Toggle for TrueTone

4:  Turn Off Low-Light Zoom Filter

The low-light Zoom filter, which can be found in settings, is the most obvious suspect for the darkening or dim screen on an iPhone. If it has been activated inadvertently, you may disable it as follows:

  • Go to Settings
  • Tap on “Accessibility
  • Next, Tap on Zoom
  • On the Next Window, You’ll see it’s Turned On
  • Now, Tap on “Zoom Filters
  • If it’s set to “Low-Light,” Then Change it to “None

5:  Turn Off the Night Shift Feature

One such function that might assist in reducing eye strain is called “Night Shift,” which warms up your screen somewhat. Although it has nothing to do with actual brightness, it may give the impression that your screen is dim than normal. See below for instructions on how to disable it:

  • Go to Settings
  • Go to “Display and Brightness
  • Tap on “Night Shift
  • Turn Off the Options

Instead, you may access the settings menu, press and hold the brightness slider, and disable Night Shift that way.

Is Your iPhone Overheating?

Using an iPhone in the hot summer sun, for example, might cause it to overheat. If the device detects that it is overheating, it may take measures to cool itself down, such as reducing charging speed or power or turning down the screen brightness.

If your iPhone’s screen brightness has dimmed unexpectedly, it may be too hot to hold. Put it in a cooler place, or turn it off for a while if it’s too hot.

Extreme heat might permanently reduce the iPhone’s battery life. Thus, do your best to maintain the optimum temperature. If your battery has already suffered severe wear and tear, it is time to consider an iPhone battery replacement.


There you have it! These are the few fast solutions to the iPhone screen-dimming problem. After implementing the aforementioned solutions, perhaps you will no longer be experiencing this problem. In any case, don’t forget to write back to us about which of the methods ended up being successful for you. We would love to hear from you.

Melanie Moeller
the authorMelanie Moeller
Melanie Moeller loves writing about the latest and greatest smartphones as well as all the latest news related to technology. She is enlightening the readers with more than 5 years of experience in writing. And when she doesn't write, she can be found listening to music and watching science fiction movies.
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