How Do You Turn Off Auto Brightness On An iPhone?

The auto-brightness of your iPhone can regulate brightness according to your environment. It means that the brightness level will automatically change depending on the lighting levels of your surroundings. But this auto brightness feature can sometimes end up draining your battery.

How can you turn off auto brightness? To turn off your iPhone’s auto-brightness, you must navigate to settings first. After that, you need to tap on accessibility and the display option. Navigating there will let you see the possibility of turning off auto brightness mode.

This article will let you know the method of turning off auto brightness in detail. Therefore, without wasting any time, let’s get started.

How Do You Turn Off Auto Brightness in an iPhone?

Turning off the auto brightness may not be a good idea. But there can be a few instances where it can be a necessity. For doing so, follow the steps mentioned below:

Step 1: Navigate to Settings

The first step would be to locate the settings app from your menu or homepage and tap on it.

Navigate to Settings

Step 2: Tap on Accessibility

Scroll a bit down, and you will find the option Accessibility. Tap on it to make further progress.


Step 3: Tap on Display & Text Size

The next option would be to select Display and Text Size from the Accessibility menu.

Display and Text Size

Step 4: Toggle off Auto Brightness

Lastly, scroll down and toggle off the Auto-Brightness option.

Toggle off Auto Brightness

How Do You Manually Change Brightness?

Manually changing brightness is required when you turn off the auto brightness mode. The breakdown of manual adjustment is given below:

From Control center

It is the most flexible and quickest way to change your iPhone’s brightness manually. The steps in this process are mentioned below:

Step 1: Swipe down

From the top of the right screen of your iPhone, swipe down, or if your iPhone has a home button available, swipe up.

Swipe down

Step 2: Adjust Slider

Then right beside the volume adjustment slider, you see the brightness adjustment option. Swipe down or up to get your desired level of brightness.

Adjust Slider

From Settings

You can also use the settings menu to attempt another technique. Here is a list of the steps involved in this process:

Step 1: Click on the settings app

Locate and click on the settings app.

Step 2: Tap on Display & Brightness

From the settings menu, tap on the Display & Brightness option.

Tap on Display & Brightness

Step 3: Drag the slider

Adjust the brightness slider by dragging as per your requirements.

Drag the slider

Is It Good to Keep Auto-brightness on the iPhone?

The auto-brightness feature controls the brightness levels on your iPhone depending on the lighting levels you are in. Turning off the auto brightness isn’t a good idea as you’ll have to do things manually then. Two of the most prominent reasons why you should not turn off auto brightness are listed below:

Manual Adjustment

Disabling the auto brightness mode means that every time you’ll have to adjust brightness manually. If you had set low brightness, you have to change it again when you go outdoors in sunny weather. Furthermore, if your battery doesn’t have sufficient charge, you must manually adjust the levels.

That means you need to do the additional task of adjusting the brightness levels every time. With auto brightness mode on, such issues are quickly taken care of.

Battery Draining

When you have set high brightness levels, the batteryOpens in a new tab. on your iPhone is more prone to draining. The auto brightness mode enables the optimization of the battery.

It enables the system to decide the brightness levels in specific lighting environments. But when you disable this mode and set the brightness levels too high all the time, it will contribute to battery draining.

Therefore, the auto brightness feature is necessary to prevent high brightness for extended periods to avoid high brightness for extended periods.


Some of the most pondered aspects of auto brightness levels are discussed below:

Why is my iPhone screen bright all of a sudden?

The reason behind your iPhone screen turning bright is the auto brightness mode. This mode enables automatic adjustment of brightness levels depending on the lighting environment. Therefore, the screen turns bright wherever you go outdoors in a sunny environment.

Why does the iPhone start dimming with auto brightness off?

The iPhone starts dimming when the Low Power modeOpens in a new tab. is enabled. With this mode, the iPhone reduces activities for saving battery power, which also involves screen brightness. As a result, even if the auto brightness is off, the brightness will dim.

Does disabling auto brightness affect battery life?

It can go either way. If your brightness level is always higher, it will drain the battery. Or, if you willingly want to keep the brightness level low, it helps in longer battery life.


Disabling the auto brightness mode means that you will have to take the extra hassle of adjusting manually. There is no need for it unless you plan not to charge it for longer than the optimum battery life.

There can be instances when keeping the phone screen dimmed for longer hours would be necessary. In that situation, it would be ideal for toggling off auto brightness.

Moreover, enabling or disabling auto-brightness mode is a matter of a few simple steps. Consider every relevant aspect before making a decision.

Suhel Rana

Hi! This is Shuhel and I've been working as an iPhone technician for over 10 years. At Techiaid, I write content on a vast range of topics on iPhone software and hardware issues. iPhone issues are nothing to be trifled with. So, you'll definitely need to consult someone who knows the ins and outs of different iPhone models.

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