Can I use an iPhone from Verizon with a canceled contract on another Verizon line?

Question

My mother recently canceled her with Verizon Wireless because she wanted to be on our family share plan. My older brother decided that he wanted to get his own contract and left the line for her to take. She doesn't like the phone that he had and she has a brand new iphone that she got when she opened her contract. She still had a year to go but decided to pay the early termination fee. She still hasn't payed yet because she is waiting for the bill to make the last payment including the ETF. The service on the phone no longer work and she was wondering if she can connect that phone with that existing line on the family share plan. I also want to know if this has happened to you. I went with her when she went to canceled the contract, the lady that helped us was being so nice to the people before because they just got new phones/contracts. When my mom told her that she wanted to cancel the contract she started being so rude like we were asking her to give us something for free. With the previous customers she was being all smiles but with us she was like whatever. She barely answer some question that my mom had and when she did, she answer with an attitude. She was the same person that helped when my dad, my brothers and me went to get new phone and she was being so nice. I couldn't believe she was being so rude. That was the worst customer service I have in Verizon. Its like they love you when you decide to get into a new contract but the minute you decide to cancel one its like you are beneath or that they could care less about what you want. Has this happened to any of you? Thank for your answer I really appreciate it. 

Answer 1

AFTER she pays her bill in full, the device should be usable.