For a week or so, my iPhone 6s has been unable to start the call properly when I get an incoming call, and the headphones (Apple EarPods, wired) are connected.
I accept the call, and the view transfers to the "call screen", but the call is indefinitely stuck at the call length time 00:00 and nothing can be heard or spoken.
This problem occurred every time when the headphones were connected, regardless of having restarted the iPhone prior.
When accepting calls without the headphones connected, things work as intended. The headphones can then be connected in the midst of the conversation and work fine.
I'm guessing I need to reset my phone. But since I would immediately have to recreate my settings from an iTunes backup – would it actually solve any problems?