Here's the New Way to Reboot Your iPhone 7
The iPhone 7 replaces the traditional home button with a non-moving capacitive touch interface powered by Apple’s new Taptic Engine. This means that the home button can provide users with more interactive feedback, but it also means that there’s no physical button to push as part of the iPhone 7 reboot sequence.
You see, on all iPhone models prior to the iPhone 7, users experiencing software or hardware issues could force reboot their device by pressing and holding the home button and sleep/wake button for about 10 seconds. Because the iPhone 7 home button is now a capacitive touch button that requires the phone to be functioning properly in order to use, it can no longer serve as a manual override during a hard reboot.
How to Hard Reboot the iPhone 7
So how do you reboot an iPhone 7? Apple has created a new button sequence for its latest device. To hard reboot an iPhone 7, press and hold both the Sleep/Wake and Volume Down buttons for about 10 seconds, or until you see the Apple logo appear on the screen.
Once you see the Apple logo, let go of both buttons and allow the device a few moments to reboot back into iOS.
Rebooting Older iPhones
This new hard reboot method applies only to the iPhone 7 and iPhone 7 Plus. All previous iPhone models will continue to use the Sleep/Wake and Home Button combination.
When, and When Not, to Hard Reboot Your iPhone 7
Note that you should only hard reboot your iPhone 7 if the device has frozen and you cannot restart via the normal method (holding the sleep/wake button until you see “slide to power off”).
Hard rebooting your iPhone may cause data loss or corrupt applications, so only use it while troubleshooting when no other option is available.