Who I have the same questioned this topic

I bought an iPhone7-128 approx. 6 months ago. People kept saying they could not hear me and I would constantly have to try to move the phone to get it just right. I went to apple and they replaced the phone. It does the same thing and I have been living with this issue. I never had any issues with the iPhone 6-128. 2 days ago, my daughter bought the iPhone7 and it has the identical problem. Here voice goes in and out as she talks to me and she also had an iPhone 6 and this was never an issue. I searched the internet and it appears to be somewhat widespread and many point to Verizon as having some kind if issue. I simply want my $1700 worth of phones to be able to make a simple call. this is ridiculous. $850 for a phone that can not make a normal call with good signal. PS, I turned off noise cancel and also ensured that LTE is data only. Those are the suggestions I found on the internet but I am at a total loss now literally $$$... H E L P PLEASE.. Also, I have the latest 10.3.3