The most notable new feature with iOS 13 has been its dark theme, which paints a darker tone in the interface and in many applications. It's a big difference with the bright white screens that have dominated iOS for years and it's something that people have been waiting for a long time.
You can switch between themes manually through the Control Center or by entering the Settings application every time you want to change it, but fortunately Apple has provided a way for the phone to automatically switch between light and dark depending on the time of day or the cycles of sunset and sunrise. In this way, you can have a lighter theme during the day when you are in well-lit areas and then a dark theme that is easier to use for night and night use.
Setting up automatic switching is easy, although Apple doesn't ask you to do it the first time you install iOS 13 or set up a new phone. Here’s how to make your iPhone automatically change the subject:
- Make sure your device is running iOS 13 or later (Settings> General> Software update on an iPhone 6S, iPad Air 2 or later)  Open the Settings application and navigate to Display and Brightness
- Change the Automatic settings in Appearance
- Tap the Options button to configure the Appearance Program
- Choose Sunset to Sunrise, which uses your phone's location to change between light and dark appearance when the sun sets, or set your own personalized schedule
- That's it, now your phone will automatically change its appearance according to your schedule or solar cycles.
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