I live in South Carolina and went to Maryland for a month. When I returned, using Skype or WebEx for work conferencing would often result in my iPhone 7 not getting a call even though the conferencing app indicated it was calling me. Sometimes the call would happen without an issue and sometimes the call would go to my voice mail. I have no issues calling out. My VPN also stopped working. Any idea what could be causing that? Thanks in advance. -Jay