Does your iPhone screen keep going dark or turning off when you’re reading something, checking a shopping list, or any other time you don’t want to? There is an easy way to fix this in Settings. Here’s how.
The reason why your iPhone keeps darkening and turning off is because of a feature called “Auto-lock” which automatically puts iPhone into sleep / lock mode after a certain period of time. At two-thirds of the set period, the screen darkens to half the brightness. To solve this problem, we need to turn off “auto-lock”.
First, open the “Settings” app by tapping on the “gear” icon.
In “Settings”, tap “Display and brightness”.
In the “Display and brightness” settings, scroll down and tap “Auto-lock”.
(Note: If you have enabled Low power mode, auto-lock will be set to “30 seconds” and you will not be able to press the option to change it. To change it, start with deactivate low consumption mode.)
Under “Auto-lock” you will see a list of time options. These determine how long your iPhone screen will stay on before it turns off and goes into lock mode.
Here we are going to turn it off completely, so select “Never”.
After that, exit “Settings”. Every time you wake up your iPhone, its screen will stay on and not go into Locked mode until you press the power button.
If you continue to have problems with a dimming screen even with “Auto-Lock” turned off, it may be because “Auto-Brightness” is turned on. “Auto-Brightness” can be deactivated under accessibility options in the Settings app.
It is usually best to re-enable automatic locking later
Disabling “Auto-lock” has some drawbacks. The first is battery life: Your phone discharges much faster if you forget to turn off the screen. The second is security: If you leave your phone on and it doesn’t automatically lock, anyone can potentially use it.
Therefore, it may be better to re-enable the “Auto-lock” feature when you are finished. To do this, simply repeat the above steps and select a time limit from the list instead of “Never”. Good luck!
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