device: iPhone XR iOS Version: [iOS 12.3] Xcode Version: [Xcode 10.3] Two iPhone Xr Calls，If both phones use two phone cards, using Mobile Networks ，webrtc will not be able to connect.
device: iPhone XR
iOS Version: [iOS 12.3]
Xcode Version: [Xcode 10.3]
Two iPhone Xr Calls，If both phones use two phone cards, using Mobile Networks ，webrtc will not be able to connect.