Swipe up and enter your passcode to unlock your device.Your device will boot up and return to the lock screen after a few seconds.Press and hold the button on the right side of your iPhone until you see the Apple logo appear.Wait at least 30 seconds for your device to fully power down.Press and hold the right-side button and either of the volume buttons until the Slide to power off control appears.If you have an iPhone equipped with Face ID, such as an iPhone 14 or iPhone 14 Pro: The steps to do this are a bit different depending on whether your iPhone has a home button on the front or whether it's equipped with Face ID and only side buttons. The same is sometimes true with an iPhone. Under the hood, your iPhone isn't that much different from a Mac or Windows PC, and you may have already encountered problems with those devices that are solved by a simple reboot. The first thing to try should be obvious: restart your iPhone. Andy Boxall / Digital Trends Restart your iPhone