This does not just shut down the application but reboots the whole system.
Iphone 7 plus front camera not working solution.
You can check if there is an ios update go to settings general software updates.
Now camera should function normally.
Press and hold the volume down and home button together until the screen displays the apple logo.
One is software problem and the other is hardware problem.
How to fix iphone 7 7 plus camera not working black screen fix 1.
To get rid this problem updating the ios seems to be a great idea.
Press and hold the power button and the volume down button at the same time until the phone turns off.
Press and hold the home button and power button volume down button and power button for iphone 7 7 plus until the apple logo appears.
Generally speaking there are two reasons for the front camera of iphone 7 not working.
If there is a new software update available iphone will download the update first.
The iphone will restart and you can now check the camera is working now or not.