Tired of iPhone's auto brightness? Try this fix

Technological devices have become an essential aspect of modern life, used by people in all occupations. Even though screen use does not cause permanent damage to our eyes, excessive device use can cause asthenopia.

If you own an iPhone, you'd know your display brightness will automatically adjust based on the light levels of your environment. While it's intended to prevent eye strain and improve screen visibility, it is not always effective.

Because you're partially in the shade, your display automatically dims even while you're outside in the sun, which might make it challenging to see what's on your screen. Because of auto-brightness, if you manually increase the brightness, it will simply decrease again. While turning off this setting is an excellent place to start, fixing this problem isn't always that simple.

The following guide will show you two settings that you need to disable to prevent your iPhone from automatically dimming. And how your iPhone might adjust its brightness, even when those two settings are disabled only if you're not careful enough.

Steps to fix iPhone's auto brightness

1. Disable auto brightness

Making sure automatic brightness is turned off in your settings is the first thing you should do. The feature automatically adjusts your brightness based on the ambient light.

All you have to do is go to the Settings application, then click Accessibility > Display and Text Size and toggle off Auto-Brightness at the bottom of the page.

If your brightness continues to automatically adjust, there is another setting you need to disable.

2. Turn off true tone

If you have an iPhone SE (2nd generation) or later, the True Tone feature can gauge the brightness and colour temperature of your surroundings and then modify the display to match them. True Tone is helpful since it not only helps display more realistic colours in a variety of lighting conditions, but it is also softer on the eyes, which you need if you read on your phone all the time.

In Settings, go to Display and Brightness and toggle off True Tone under the Brightness header. As long as auto-brightness is also disabled, turning True Tone off should prevent your iPhone from automatically adjusting your brightness.

There is an exception. Never let your iPhone overheat.

Your iPhone will automatically change the display brightness if it is overheating, even if you have both auto-brightness and True Tone disabled.

You should use your iPhone between 32 and 95 degrees Fahrenheit (zero and 35 degrees Celsius) and store it between 4 and 113 degrees Fahrenheit (between 20 and below zero and 45 degrees Celsius) to avoid this from happening. On a hot day, there's a considerable risk that your iPhone may overheat if you leave it in your car or on the sidewalk, which will result in your display dimming.