Have you ever opened your iPhone and noticed that the screen is much darker than it was an hour ago? Well, this is no coincidence. This is an automatic measure Apple has programmed into all iPhone devices as a battery saving measure.
Brightness is automatically adjusted according to the amount of ambient light. The less ambient light, the darker the screen.
You probably want your iPhone to always have the same brightness level. Higher brightness levels on your phone may reduce your vision and make you see better, whether you’re in low light or not.
Luckily, there is a way to adjust your iPhone’s brightness level so it never turns on again.

Brightness is automatically adjusted according to the amount of ambient light. The less ambient light, the darker the screen.
(Cyber Guy.com)
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How can I adjust the brightness level on my iphone?
Adjusting the brightness level is very easy and there are two different methods. Here’s the first method:
- Open your iPhone and use your finger to Swipe down from the top right corner of the screen

Brightness is automatically adjusted according to the amount of ambient light. The less ambient light, the darker the screen.
(Cyber Guy.com)
- go to brightness icon Slide up and down to a comfortable level

Here’s how to adjust the brightness on your iPhone.
(Cyber Guy.com)
Here’s another way to adjust brightness levels on your iPhone:

Go here to adjust the brightness on your iPhone.
(Cyber Guy.com)
- Go to the brightness slider, slide left and right until an acceptable level is reached.

Here’s how to adjust the brightness on your iPhone.
(Cyber Guy.com)
How can I prevent brightness levels from automatically dimming?
There are two things you need to do to keep the brightness of your smartphone at a certain level. Both should be adjusted in the Settings app.
The first is to turn off Auto-Brightness (this only applies to iPhone 14 Pro and Pro-Max models and newer). The second is Turn off True Tone.
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How to turn off auto-brightness
How to turn off True Tone

Here’s how to turn off True Tone on your iPhone:
(Cyber Guy.com)
- your setting app
- scroll down and select display and brightness
- Below the brightness slider, true tone option. toggle this off

The sliders for turning True Tone on and off are:
(Cyber Guy.com)
What else can I do to prevent the brightness level from changing?
Alternative to Apple password
The biggest thing you can do to keep your brightness level consistent is to keep your iPhone from overheating. Even with Auto-Brightness and True Tone turned off, your iPhone will automatically reduce brightness levels as a safety measure if your device is overheating.
If you leave your phone in the sun or in a hot place (like in a car) for a long time, it can overheat in just a few seconds. Overheating can also occur if you have a faulty battery that needs to be replaced.
How can I check the battery status of my phone?
go to setting
scroll down and select battery

Here’s how to check your iPhone’s battery health:
(Cyber Guy.com)
select Battery status and charge

This screen shows the battery health level of your iPhone.
(Cyber Guy.com)
Displays the battery health level.

This screen displays the battery health level.
(Cyber Guy.com)
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If the maximum capacity is below 80%, Apple recommends considering getting a new battery.
For more Apple tips, visit CyberGuy.com, search for “Apple,” and subscribe to the free CyberGuy Reports newsletter at CyberGuy.com/Newsletter.