Why is my VS9854GLTE cutting out during phone conversations?

[AC Question]

Others can't hear me, then there's a little flute-like beep, then the call ends. This is getting increasingly worse over the past 2 months.

 

[B. Diddy]

Welcome to Android Central! Which carrier do you have? Have you discussed this issue with them?

Does it matter if you use a wired or Bluetooth headset, or speakerphone?