A:Answer Yes!
If your headphones are on and connected to your phone via Bluetooth, then you will a ringtone in the headphones that you can easily identify. To answer a call, simply press the button between the up and down volume buttons, the same button you use to pause or play music while listening to music on the headphones.
To hang up a call while on the headphones, simply press the same button you used to answer the call.
Calls will also go from your phone's speaker to your headphones if you want to connect the headphones while you're in the middle of a call. There can be about a 1 second delay in that process, but it's otherwise rather seamless. Similarly if you turn off the headphones while still in a call, the call will go back to your phone's speaker again.
Just experiment with them for a couple days to get the hang of it, but basically they have all the functionality you could want short of bringing up Google to let you do voice commands (which I don't know if I've ever tried to do...)
(I really love these headphones. I wear them to workout, and I just got my second pair recently after getting the first pair a little over two years ago. Again, they wore down a lot faster with all the sweat and kinda mean treatment I gave them ha, but they still lasted a long time and were plenty durable with a great sound even to the end! I was desperate to get another pair the very day that my first pair perished.)