How to Disable the Auto-Brightness Adjustment on Your iPhone

  • Auto-brightness is a feature that automatically adjusts your iPhone’s screen brightness based on ambient light conditions.
  • Disabling auto-brightness allows you to manually control your iPhone’s screen brightness, which can be beneficial in certain situations.
  • The process of turning off auto-brightness is straightforward and can be done through the Settings app.
  • Manually adjusting brightness can help reduce eye strain, improve battery life, and provide a more consistent viewing experience.
  • However, auto-brightness can also be useful in certain scenarios, so it’s a matter of personal preference.

Understanding Auto-Brightness

Auto-brightness is a feature on iPhones that automatically adjusts the screen’s brightness level based on the ambient light conditions around you. The idea behind this feature is to provide an optimal viewing experience by adjusting the brightness to match your surroundings. For example, when you’re in a dimly lit room, the auto-brightness feature will dim the screen to reduce eye strain and save battery life. Conversely, when you’re outdoors in bright sunlight, the screen will become brighter to improve visibility.

While auto-brightness can be convenient, some users prefer to have more control over their iPhone’s screen brightness. Perhaps you find the auto-brightness adjustments too aggressive or not in line with your personal preferences. In such cases, disabling the auto-brightness feature can be a better option.

Why Disable Auto-Brightness?

There are several reasons why you might want to disable the auto-brightness feature on your iPhone:

  1. Consistent Viewing Experience: Auto-brightness can sometimes cause abrupt changes in screen brightness, which can be distracting or uncomfortable for some users. By disabling it, you can maintain a consistent brightness level that suits your preferences.
  2. Better Battery Life: While auto-brightness is designed to save battery life by dimming the screen in low-light conditions, some users find that manually setting a lower brightness level can be even more effective in extending battery life.
  3. Reduced Eye Strain: If you find the auto-brightness adjustments too bright or too dim for your liking, disabling the feature and manually adjusting the brightness can help reduce eye strain.
  4. Personal Preference: Some users simply prefer to have full control over their device’s settings, including screen brightness.

How to Disable Auto-Brightness on Your iPhone

Disabling the auto-brightness feature on your iPhone is a straightforward process. Follow these steps:

  1. Open the Settings app on your iPhone.
  2. Scroll down and tap on Accessibility.
  3. Under the Vision section, tap on Display & Text Size.
  4. Scroll down to the bottom of the page and toggle off the Auto-Brightness switch.

Once you’ve disabled auto-brightness, you can manually adjust the screen brightness by following these steps:

  1. Open the Control Center by swiping down from the top-right corner of the screen (or swiping up from the bottom on older iPhone models).
  2. Locate the brightness slider and drag it left or right to adjust the brightness level to your desired setting.

Alternatively, you can adjust the brightness through the Settings app:

  1. Open the Settings app.
  2. Tap on Display & Brightness.
  3. Drag the Brightness slider to your preferred level.

Tips for Manually Adjusting Brightness

When you’re manually adjusting the brightness on your iPhone, keep these tips in mind:

  • Adjust for Your Environment: Consider the lighting conditions in your surroundings and adjust the brightness accordingly. A brighter screen may be necessary outdoors or in well-lit areas, while a dimmer screen can be more comfortable in low-light conditions.
  • Reduce Eye Strain: Prolonged exposure to bright screens can cause eye strain and fatigue. Adjust the brightness to a comfortable level that doesn’t strain your eyes, especially when using your iPhone for extended periods.
  • Save Battery Life: Lower brightness levels can help conserve battery life, as the display is one of the most power-hungry components of your iPhone.
  • Use Night Shift: If you find yourself using your iPhone in low-light conditions frequently, consider enabling the Night Shift feature. This feature adjusts the display’s color temperature to reduce blue light exposure, which can help reduce eye strain and improve sleep quality.


Q: Will disabling auto-brightness affect my iPhone’s battery life?

A: It depends on how you manually adjust the brightness. If you keep the brightness at a lower level, it can help conserve battery life. However, if you consistently use a higher brightness level, it may drain your battery faster than when auto-brightness is enabled.

Q: Can I re-enable auto-brightness if I change my mind?

A: Yes, you can easily re-enable auto-brightness by following the same steps outlined above but toggling the switch back on.

Q: Does disabling auto-brightness affect other display features?

A: No, disabling auto-brightness does not affect other display features like True Tone or Night Shift. These features can still be used independently.

Q: Will I need to adjust the brightness every time I change environments?

A: Yes, if you’ve disabled auto-brightness, you’ll need to manually adjust the brightness level whenever you move between different lighting conditions to maintain a comfortable viewing experience.

Q: Can I set a shortcut or automation to adjust the brightness?

A: While there’s no built-in shortcut or automation for adjusting brightness, you can use third-party apps or shortcuts to create custom actions for adjusting the brightness level on your iPhone.

By disabling the auto-brightness feature on your iPhone, you gain more control over your device’s screen brightness, allowing you to tailor it to your specific needs and preferences. Whether you’re looking to reduce eye strain, extend battery life, or simply maintain a consistent viewing experience, manually adjusting the brightness can be a valuable option. Remember, the choice between using auto-brightness or manual adjustment ultimately comes down to personal preference and your specific use case.