Auto-brightness is on by default, but you can manage it in Accessibility settings. Especially useful when you are standing under the sun, which makes it difficult to view the screen. You can slide from left to right to increase brightness. Go back and open Settings again and tap on Display and Brightness. The iPhone comes with brightness settings and ambient light sensors, which you can use to increase and decrease the brightness level, and control how the screen dims automatically. It can be a hit or miss sometimes, but for the most part, it works, and when it doesn’t, press a button. Toggle on the Raise to Wake option, and you are done.

Open Settings and tap on Display & Brightness. The moment you pick up your phone from your desk or pull it out of your pocket or raise it, the screen will automatically turn on. The feature was first introduced with the release of iOS 10. iPhone comes with Raise to Wake feature, which uses a motion sensor to detect movement. You don’t have to press a button to turn on the screen in the first place. Let’s see how we can stop iPhone from turning off, sleeping, or locking automatically.

But why should you have to do that so often, when you fix that problem forever. Sure, it's merely a matter of pressing a button to reactivate the screen to refocus. That’s one reason why it’s annoying when the iPhone turns off, sleeps, or locks automatically in the middle of something. Imagine the frustration when the iPhone's screen turns off automatically or sleeps while you're reading something online. People use their iPhones for all sorts of things - setting reminders, read books, use it as light in the dead of night, and more.

How to make iphone not sleep