Why Does My iPhone Keep Dimming? 7 Best Fixes

Ah, technology. When it works, it’s magic. But when it doesn’t? That’s a whole different story. So, I recently noticed that my iPhone screen kept dimming, and at first, I thought it was just my imagination or maybe my tired eyes. But no, it was a real thing. And after diving into the issue and trying out various solutions, here’s what I found.

1. Auto-Brightness: The Hidden Culprit

You might not know it, but your iPhone has a feature called Auto-Brightness. This automatically adjusts the screen brightness based on the ambient light. In a dark room? Your screen might dim to avoid blinding you.

Fix: Head over to Settings > Accessibility > Display & Text Size. Here, you can toggle off Auto-Brightness. Apple’s official page has a more detailed walkthrough if you get stuck.

Auto-Brightness: The Hidden Culprit


2. True Tone: Playing With Colors

Introduced with the iPhone 8, True Tone adjusts the white balance of your display to match the surrounding light. While it’s meant to reduce eye strain, it can sometimes seem like your screen is dimming.

Fix: Go to Settings > Display & Brightness. There you’ll find the True Tone switch. Toggle it off and see if it helps. Here’s an article I found that explains the feature in depth.

3. Battery Saving Mode: Preserving Juice

When your battery dips below 20%, your iPhone might activate its Low Power Mode, which can reduce brightness to save energy.

Fix: Swipe into your Control Center and check if the battery icon is yellow. If it is, tap on it to turn off Low Power Mode. You can also do this via Settings > Battery.

Battery Saving Mode: Preserving Juice

4. Too Hot To Handle?

If your iPhone overheats, it may dim the screen to cool down. Remember that one time I left my phone in direct sunlight? Big mistake.

Fix: If your iPhone feels hot, move it to a cooler environment. Avoid direct sunlight and don’t keep it in tight pockets for long. Check out this resource for more on how to care for your iPhone.

5. Background App Refresh: The Sneaky Drainer

Some apps refresh their content in the background, consuming more power and potentially leading to brightness adjustments.

Fix: Head to Settings > General > Background App Refresh and disable it for apps you don’t need constant updates from.

Background App Refresh: The Sneaky Drainer

6. Zoomed In: The Lesser-Known Glitch

There’s a rare glitch where using the zoom feature can cause screen dimming issues. Experienced it once, and it’s baffling.

Fix: Triple-click the side or home button (depending on your iPhone model) to zoom out. Alternatively, go to Settings > Accessibility > Zoom to adjust the settings.

7. Software Bugs: Last Resort

Sometimes, it’s just a software glitch causing the problem.

Fix: Try restarting your iPhone. If the problem persists, consider updating your iOS. Apple often releases patches that fix minor bugs. You can always check Apple Support Forums for any known issues.


Dimming issues can be pesky, but they’re often fixable with a bit of patience and troubleshooting. Remember, technology isn’t perfect, but we can usually find a way around its quirks. If all else fails, reaching out to Apple Support or visiting an Apple Store is always an option.

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Benjamin Johnson

Hey there, I'm Ben, the tech-savvy Founder and CEO of WinFixo.com. I've dedicated my life to helping fellow Windows users optimize their PCs for peak performance. Join me on this journey as we unlock the full potential of your Windows devices together!

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