If you're experiencing any issues with your iPhone on Black Friday, restarting it can often solve the problem. Here's a step-by-step guide on how to restart your iPhone: 1. Press and hold the power button (located on the right side or top of the device) until the power off slider appears on the screen. 2. Swipe the power off slider from left to right to turn off your iPhone. 3. After your iPhone is completely turned off, press and hold the power button again until the Apple logo appears on the screen. 4. Release the power button and wait for your iPhone to finish restarting. Restarting your iPhone can help resolve various issues, such as freezing, unresponsiveness, or software glitches. It's a simple troubleshooting step that can often save you from unnecessary frustration on Black Friday.