The iPhone 7 and iPhone 7 Plus may have removed the physical home button, but this does not mean it is impossible to hard reset or enter DFU mode. In fact, there is a completely new combination of buttons to do so.
To hard reset your iPhone 7 or force it to shutdown, press down on the power button on the right side of the device for a few seconds. Then, while still holding the power button, hold down the lower volume button on the left until your phone completely shuts down.
Entering DFU mode requires a few extra steps, but it is still doable. First, connect your phone via the lightning cable to a computer with iTunes. Then, shut down your phone like normal by holding the power button down for about three seconds and then immediately holding the lower volume button for 10 seconds. Once the screen is black, release the power button but keep holding the lower volume button for a few more seconds. iTunes should then display a message saying that there’s an iPhone in recovery mode and you can now restore it.
To get out of DFU mode, hold down the power button and lower volume button together until your iPhone displays the Apple logo and powers back on again.
Overall, this was just a quick guide on how to get an iPhone 7 out of recovery mode. If you have any further questions or comments, please feel free to leave them down below.