Someone has already posted my issue-see below:
When someone tries to call (or I call one phone from my other) there is no ring tone on either end. If the caller waits for 10-15 seconds+ in silence they can leave a voicemail message. If they do that, I receive a voicemail notification, but there will be other indication of the call whether in the call or missed call log. If the caller hangs up without waiting through the silence, I have no idea the call was ever attempted. I have to restart my phone(s) all day long to make them ready to receive a call. Once the phone is restarted, the phone will be able to receive a call until I get a text or go into an app or log into a website or turn on Wi-Fi or turn off Wi-Fi or connect/disconnect from Wi-Fi or drive down the street or the screen times out and sits for a period of time (sometimes as little as 5 minutes) ... . In addition, if I receive a text or Yelp request, etc while the screen is black (having timed out) those notifications will not appear until the phone has been restarted and a call pushed through. Then the notifications and texts will show the time sent as the time of the restart/call, not the times they were actually sent.