Verizon policies suck.
All I want to do is buy a flip phone and drop a currently activated Verizon sim into it. Nope. To buy a phone from them, you must establish a new line, get a new phone to go with the new line, pay 2/3rds of the phone off, wait 14 days, pay the other 1/3rd off, then drop the line. Then you can drop your old sim into the new phone. Let’s not forget the fees that go along with that new line.
They also have blocks in place to keep you from buying a cheap compatible phone from Walmart and swapping sims. At least the guy warned me before I tried it
It’s better to find a used or refurbished compatible phone.