Incoming phone calls disabled for smartphone

[neku]

The incoming phone calls for a smartphone of a senior citizen are disabled, and no one can contact her on phone. What setting is being used to disable the incoming phone calls on the smartphone?

 

[Fire&Rain]

The setting that prevents a smartphone from receiving calls is usually called Do Not Disturb or call blocking. On many devices, enabling Do Not Disturb stops incoming calls, notifications, and alerts so the phone won’t ring. Some phones also allow you to block all calls except from certain contacts. In this case, the senior citizen’s phone likely has Do Not Disturb enabled or all incoming calls blocked in the call settings, which prevents anyone from reaching her by phone.

 

[kit_hung]

appears that the phone is set to Do Not Disturb or Airplane Mode which is currently blocking all incoming calls. Check if there are any Call Barring settings that may have been accidentally turned on.