It is the phone not the network. And what happens when you leave your house, you can not take your extender with you. I have verizon and I have the new iphone 13 promax, and I also have also on verizon a 4 year old note 10. While I love the iphone, it is horrible as a phone. People can not hear me. It drops calls. When I have a work call I have to tell people I will call them back on my 4 year old phone and they hear me fine. This happens 10 times a day, so it is not random. 100% of the time when I call back on the old phone on the same network from the same place, the bad call becomes a perfect call. This is absolutely a problem with the iphone, not verizon, not the service, not the location, its the iphone.