It's been a while from that time I spoke to Verizon with technical support.
I was reporting that my area had poor-quality signal affecting my data speed service 5g though I live in a residential area and Verizon phone was said good service available in this area.
not even gives me 2 bar signal on my new Samsung Galaxy phone and other people also using Verizon come to visit me sometimes with the same issue. I'm away one mile from the signal tower. no good signal before half a mile from the phone tower. it's not a phone issue it's a service coverage issue. it's been a while like this. A long time ago I heard promises from Verizon to take this series but nothing happens.