If I had a Iphone and it got water damage and switched to a new Nokia lumia 822 will Verizon let me switch back to a new Iphone?
There are no extra charges on switching from one phone to another as long as you are still on the same subscriber. However, you may have to contact the customer care on the terms depending on your signed contract.
Depends, you'd probably have to pay extra money, depends on whether you signed a new contract or not as well. Call them and find out ;)
As long as it is a verizon phone there will be no problem.
Not until your contract expires