Update on new SIM and one way audio issue. Installed the new SIM received from Verizon two nights ago. It is the other SIM, not the same one I had at first. Unlike some others have reported, I did have to call verizon to have them register the SIM to my account. Everything seemed good, including slightly better signal. However, last night, I experienced the one way audio issue again. So, it would appear the new SIM did not fix this. Over on XDA someone mentioned that they called tech support and had them re-provision their account and this solved their problem (they had already replaced the phone and the SIM). I am going to try this as soon as I can use my husbands phone to call as I believe you will have to pull the SIM card when they are done. This kind of makes sense to me that it is not truly a hardware issue but may be how your account is set up. A lot of people who have had this problem have not had it fixed with new hardware, yet others have never experienced it at all. Any one have any thoughts?