I have recently attempted to call a scammer (tech support) and they claimed you could not hear me so I called my friend and sure enough, he could not hear me so I call the test and that also picked sound so then I proceeded to download the FireRTC app and then my calling than just stop and it would not even go through to the test it would get to a certain point and then the call would disconnect, If anyone knows a fix please tell me soon as possible.