The hardware keys on your iPhone may seem like one of the more uninteresting parts of your device. However, they can perform a variety of extra functions.
End a Call With The iPhone Power Button
Obviously, a call can be ended with the red hang-up button on-screen. However, you can click the hardware power button on the side of your iPhone and that hangs up the call too.
Silence or Reject Calls With a Hardware Button
We all have those moments when you just do not want to take a call and you need to silence your phone ASAP. A quick way to do this is by pressing any hardware button on your iPhone, i.e. the power or volume keys. Furthermore, pressing the power button twice quickly when you have an incoming call rejects it. The caller is sent to voicemail or whatever other rejected all settings you have setup.
User the Volume Keys as a Camera Shutter
For most of us, our iPhones’ are our cameras. Instead of using the software button to take a picture, you can press the volume keys. Not only can this sometimes be more convenient, but it also makes it feel like you’re using an old-school camera, not a smartphone!