I just wanted to put this out there and make the issue known so hopefully a software update can possibly address this properly.
I found a strange issue where it appears when the phone receives a call while connected to a wifi network, that it tries to pick up the call on wifi instead of properly handling it on the cellular network. The carrier I'm using is T-Mobile USA. My speculation is that wifi calling isn't properly disabled and the issue occurs. Generally what will happen is someone will make a call, and the call will ring twice and then to straight to voicemail. If the phone is taken off of wifi, or an outbound call is successfully made while on wifi, the issue disappears temporarily (somewhere between 8 and 16 hours. I'm assuming when a change in network occurs). If the phone is rebooted with wifi on, the issue is then easily replicated as calls won't successfully make it to the phone until wifi is disabled or an outbound call is completed.
