My iPhone 8 Is Slow! Here's Why & The Real Fix.

1. Press and hold the power button (iPhones without Face ID) or the side button and either volume button (iPhones with Face ID) on your iPhone until the slide to power off slider appears on the display.
2. Swipe the red power icon from left to right to turn off your iPhone.
3. Wait about 30 seconds, then press and hold the power button (iPhones without Face ID) or the side button (iPhones with Face ID) again until the Apple logo appears in the center of the display.

Turn Off Your iPhone In The Settings App (Option 1)

1. Open the Settings app on your iPhone.
2. Tap General.
3. Scroll to the bottom and tap Shut Down.
4. Swipe the red power icon from left to right.
5. Plug your iPhone into a power source using a Lightning cable to turn it on again.

Turn Off Your iPhone Using AssistiveTouch

1. Watch our YouTube video or follow the steps below!
2. Open the Settings app.
3. Tap General.
4. Tap Accessibility.
5. Tap AssistiveTouch.
6. Turn on the switch next to AssistiveTouch.
7. Tap the AssistiveTouch button when it appears on the display.
8. Tap Device.
9. Tap More.
10. Tap Restart.
11. Tap Restart again when the confirmation alert appears.

There are two ways to update iOS on your iPhone: in the Settings app and by using iTunes.

Update iOS In The Settings App

1. Open up the Settings app.
2. Tap General.
3. Tap Software Update.
4. If an update is available, tap Install Now or Download and Install.

Update iOS Using iTunes (PCs and Macs running macOS 10.14 or older)

1. Connect your iPhone to a computer using a Lightning cable.
2. Open iTunes.
3. Click the Phone button in the upper left-hand corner of iTunes (see image 3).
4. Click Check For Update.
5. If an update is available, click Download and Install.

Update iOS Using Finder (Macs running macOS 10.15 or newer)

1. Connect your iPhone to your Mac using a charging cable.
2. Open Finder.
3. Click on your iPhone under Locations.
4. Click the General tab.
5. Click Check for Update.
6. Click Download and Install if an iOS update is available.

1. Double-press the Home button to activate the App Switcher on your iPhone, which will display all the apps you currently have open.
2. Using your finger, swipe up on the apps you want to close out of.
3. You'll know the app has been closed when it's no longer displayed in the App Switcher.

1. Open the Settings app on your iPhone.
2. Tap General.
3. Tap iPhone Storage.
4. At the top of this menu, you'll see how much storage space is available. If you have less than 1 GB of space available, it may be making your iPhone slow.
5. To quickly free up some storage space, tap Enable next next to some of the features under the Recommendations submenu (see image 2).

1. Open the Settings app.
2. Tap General.
3. Tap Background App Refresh.
4. Tap the switch next to the apps that you want to turn off Background App Refresh on. You'll know Background App Refresh is off on a particular app when its switch is gray and positioned to the left.

1. Open the Settings app.
2. Scroll down and tap Safari.
3. Scroll down and tap Clear History and Website Data.
4. Tap Clear History and Data when the confirmation alert appears at the bottom of your iPhone's display.

1. Open the Settings app.
2. Tap General.
3. Scroll down and tap Transfer Or Reset iPhone.
4. Tap Reset.
5. Tap Reset All Settings.
6. Enter your passcode, if prompted.
7. Tap Reset All Settings again to confirm your decision.
8. Your iPhone will shut down, complete the reset, and turn itself on again will automatically turn back on when the reset finishes.

How To Repair Your iPhone With Apple's Mail-In Service

1. Visit Apple's support website to begin the online mail-in repair process.
2. Alternatively, call 1-800-MY-APPLE (1-800-692-7753) to set up a repair.

How To Repair Your iPhone At The Genius Bar Inside Your Local Apple Store

1. Visit Apple's website to make a Genius Bar appointment before you go into the store. Apple Stores are extremely busy, and if you don't have an appointment, you may have to wait for hours or end up being turned away. (Editor's note: I'm a former Apple tech and we're not exaggerating — please, do yourself a favor and make an appointment first!)
2. When you arrive, go to the Genius Bar to check in for your appointment.
3. Genius Bar appointments always include free diagnosis. If you're under warranty, many repairs can be done on the spot, but it all depends upon which parts are in stock. If you're not under warranty, the Genius will give you a quote for the cost of a repair.