I have set my iphone 6S to lock after 4 minutes of non-activity.
Unfortunately the options in settings mean that incoming calls are
silenced when the phone is locked. The only way I can hear incoming
calls is to have the phone unlocked always which u...
That’s the root of the problem. In Do Not Disturb / Silence - there are
2 options: Silence Always or Silence while iPhone is locked. You can
only deselect “while locked” by selecting “always”. It’s not possible to
deselect both options