Question about transferring from Verizon to Tracfone from basic flip to unlocked smart flip

Hello,

My wife currently has a basic flip phone that's a grandfathered $15/month pre-paid plan that Verizon has. She is finally interested in getting a smart phone and leaning towards a smart flip like a motorola razr or galaxy flip. I've used Tracfone with my pixel for a few years and only had a couple small issues when I first made the switch. I had a couple questions to see if it could go smoother for her:

• If she gets an unlocked smart flip, does she just need to get a verizon sim kit and follow the steps when setting up to transfer her old phone number?

• Is there anything she needs to do on verizon's end aside from cancelling her old plan once Tracfone is set up since Verizon owns tracfone now?

• Are there issues with smart flips with Tracfone?

Thank you!