iPhone Auto-Brightness is programmed to automatically dim or increase the brightness of the iPhone. fabric by default, according to the environment that the smartphone it is. This also happens with other branded devices.

Apple devices are equipped with a light sensor that adjusts the brightness levels of the screen, reducing the brightness in dark places and increasing it in bright places, for easier reading and more comfortable on the eyes.


You always have the option to control brightness manually in the shortcut bar of device (the one that comes up when you drag your finger from the bottom up on the screen). But this can be a losing war if you don't disable the auto-tune feature.

In addition, you can also learn to further dim your phone. For both options – disable brightness or manually decrease it – we have prepared this tutorial, divided into two parts.

How to disable iPhone Auto-Brightness?

1. Access the “Settings” of the cell phone. Click on “Accessibility” and then on “Screen and Text Size”;

2. Scroll the screen to the end and disable the toggle switch for the “Auto Brightness” option.


It is noteworthy that by disabling the Auto-Brightness control, battery life can also be drastically reduced, as the higher the screen brightness, the more battery is consumed.

Therefore, you might also want to go through the step-by-step below to learn how to decrease brightness manually.

How to further decrease the brightness of the iPhone screen?

1. Access the “Adjustments” of the cell phone, click on “Accessibility” and then on “Screen and Text Size”;

2. Scroll the screen to the end and activate the toggle switch for the “Reduce White Point” option. The difference will be noticed right away and a control bar will be available for you to set the light intensity.

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“Inversions” on the iPhone also help

The iPhone also has “Classic Flip” and “Smart Flip” available in the same field as “Screen and Text Size”.

They are intended to improve visibility, take out excess light and also save battery power. The classic version inverts all screen colors, while the intelligent one, also known as “dark mode”, inverts only some colors and does not alter images, media and applications.

Image: Apple Reproduction
Image: Apple Reproduction

The possibilities for changing the color and color settings exist thanks to Apple's accessibility tools, which allow you to customize features for people with disabilities or sensitive to light.

For those with color blindness, for example, the devices have color filter capabilities.

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