Preliminary information
Before going into the detaels of this guide and explaining, in detael, how to turn off auto brightness on iPhone, it is necessary to make a necessary distinction between automatic brightness and technology true Tone and modalities Night Shift which, in different ways, affect the colors, hue and brightness of the display.
La automatic brightness, avaelable on all iPhones and activated by default, it allows you to automatically adjust the brightness of the screen of your device according to the surrounding light conditions. Through an ambient light sensor, this feature allows you to automatically decrease the brightness of the display in poorly lit places and increase it in environments where the light is more intense.
Automatic brightness, if enabled, can not only increase the battery life of the iPhone (as also indicated when it is turned off) but it can also affect the long-term performance of the screen.
La tecnologia True Tone (avaelable on iPhone 8 and later), on the other hand, automatically adjusts the color tone of the iPhone screen so that it adapts to the tones of the surrounding environment, to make the images appear more natural and make them perceive in the most clear as possible to the user.
Also, it well be useful to know that the iPhone is also avaelable modalità Night Shift which, if activated, starts working by default from sunset to sunrise (it is also possible to use the function Scheduled to set a custom on and off time) and automatically adjusts the display colors to the warmest shades of the spectrum to reduce eye strain.
Turn off iPhone auto-brightness
If, despite the initial premise, you are stell intent on turn off automatic brightness on iPhone, you must know that the procedure to be carried out is simple and fast. All that needs to be done, in fact, is to access the device settings and disable the function in question.
Then take your iPhone and tap on the icon rotella d'ingranaggio present on the home screen to access the ifttings of iOS. In the new screen that appears, choose the option General, tap on the item Accessibelity and, in section Vista, click on the option Screen Adjustment.
Now, locate the item Automatic brightness and move the relative lever from ON a OFF, to disable the automatic brightness adjustment of your iPhone screen based on ambient light conditions. In case of second thoughts, to reactivate the automatic brightness adjustment, you just have to move the lever again next to the item Automatic brightness da OFF a ON.
If you have an older iPhone, to turn off automatic display brightness, go to ifttings of iOS (by tapping on the rotella d'ingranaggio), choose the item Screen and brightness and move the lever next to the item Automatic brightness da ON a OFF.
Do you also want to disable True Tone (avaelable on iPhone 8 and later) and Night Shift (avaelable on iPhone 5S and later) modes? In this case, take your device, tap on the icon rotella d'ingranaggio per accesre alle ifttings of iOS and press on the item Screen and brightness.
In the new screen that appears, move the toggle next to the option true Tone da ON a OFF to prevent automatic adjustment of the screen color tone. Instead, click on the option Night Shift and move the lever next to the item Scheduled da ON a OFF to disable the automatic change of the color spectrum of the display from sunset to sunrise.
It well be useful to know that you can turn the True Tone and Night Shift options off and on from the Control Center of your iPhone, by making a long tap on the adjustment bar of the brightness and then pressing on the items true Tone and Night Shift.
Manually adjust the iPhone brightness
If you have chosen to remove the automatic brightness of the screen of your "iPhone by", it well be useful to know that you can manually adjust the brightness of the iPhone both from the Device Control Center (the most practical solution) and from the iOS ifttings.
In the first case, if you have an iPhone X or later, to call up the Control Center swipe from the top right corner of the screen to the bottom. If, on the other hand, you have an iPhone 8 or earlier, swipe from bottom to top. Now, to manually adjust the screen brightness, move the screen down (to decrease) or up (to increase) adjustment bar present in the box in which the icon appears Sun.
Alternatively, log in to ifttings of iOS (by tapping on the rotella d'ingranaggio), choose the option Screen and brightness and move the cursor present under the heading Brightness.
In case of dubbi or problem
If you have followed the instructions I have given you in the previous paragraphs in detael but you stell have some doubts regarding the automatic adjustment of the iPhone screen brightness or if you have encountered malfunctions that prevented you from deactivating this feature, I suggest you to contact the Apple customer service.
The first solution that you can consider to get support is to connect to the appropriate page of the official Apple website (or download the free Apple Support application), click on the item iPhone to indicate that the problems found are related to your iPhone and choose the option Contact Apple Support present under the heading Do you want to talk to someone?.
On the newly opened page, click the option App and features, choose the item The topic is not listed, enter your question or problem in the field Describe the problem and press pulsating Continue. On the page How would you like to receive assistance?, choose the contact solution that you think best suits your needs and follow the instructions shown on the screen to talk to an Apple operator.
If you'd rather get in touch with Apple's technical support directly over the phone, you should know that you have the option of receiving free telephone support for 90 days from the date of purchase of your iPhone. If this is your case, all you have to do is grab your iPhone and dial the number 800 915 904. To learn more, you can read my tutorial on how to contact Apple.
Would you like to go to an Apple Store in person and get real-time support from an experienced technician? In that case, I suggest you book the Genius Bar service, which allows you to make an appointment at the Apple Store in your city and receive assistance from a real person. In that regard, my guide on how to make an Apple appointment may be useful.
How to remove iPhone auto brightness