If you spend most of your free time elbow deep in garden soil, if you have a long commute, or if you otherwise need to take calls on your iPhone hands free, you will probably be pleased to know that it is possible to set your iPhone to automatically answer calls in Headset or Speakerphone mode.
Go to Settings>General>Accessibility and scroll down to tap on Incoming Calls.
Select Headset or Speakerphone, whichever mode you prefer. Now all calls will automatically be answered in the mode you chose.
You will need to repeat the same steps to turn this mode off.
Like the Invert Colors setting that makes using your iPhone in the dark easier on your eyes, the ability to answer calls with the headset or speakerphone has so much functionality potential for the average iPhone user, it is a shame they are both buried so deep in the settings menu instead of featured in Control Center.
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