Same problem. REALLY frustrating. The cell phone service where I live is horrible so I depend on Wifi calling. Its an average between 3 - 5 minutes and the call gets dropped. Trying to make a service call, they had to keep calling me back. I've gone 8-12 with having to call someone in a conversation. For the first time, someone told me to get a different phone and I'll admit I'm tempted to after this issue and the lack of fixing it in a timely manner. Just rollback the revision so we can make calls again!