In short, yes it is. I love making payments on a phone that when on a call, people on the other end constantly complain of the reception.
Sorry to hear, but I definitely can't say the same. My 7 Plus is on par with my 6s Plus and both had/has excellent reception. I'm usually on my iPhone with another 7 Plus user, and it's nice and clear using our Airpods. On the rare occasions when I actually put my iPhone to my ear it's also the same results, nice and clear. I'm using a BestBuy unlocked 256gb Jet Black 7 Plus with a Verizon sim card.