Forgive me if this has been covered before, but it seems like an intersection of a variety of questions, so I went ahead. I recently took a new job. They have only a few employees and have a family plan through AT&T. The person I'm replacing wants to keep the number he had, but give back the company's iPhone 4S. They're OK with that and would port the number out to him. His line has grandfathered unlimited data and grandfathered $5/200 text plan and it's grandfathered as a $10 line. They are willing to port my number in and cover the cost of it. I currently have the same grandfathered text and data plans on my personal 4S. My phone is 64GB and theirs is a 16GB device. I'd want to keep using my phone. If I join the company's plan and can keep the grandfathered details, that's great, but I don't want to just give up my own grandfathered plans unnecessarily. To further complicate things, I have my own family plan with my mom on a dumb phone ($10/line) and am getting ready for my daughter to have her own phone. Boss is understandably not comfortable with my giving her the company's 16GB phone for her use even if I'm responsible in case of loss/damage. So, questions: - Can AT&T port the number out & mine in and still keep the grandfathered data/text plans? - Is porting the right terminology for what's happening here (all within AT&T) as opposed to adding/dropping? - Can I keep the grandfathered data/text plans on my existing plan if I want to add a line/number for my daughter and shift it to that? - Other suggestions for how this might be handled? Thanks for your input.