hello, i am on my parents phone plan through a different carrier but am paying them every month for my phone. When my phone is paid off, can i switch to another carrier and keep my phone even though I am not an account holder for my phone/plan? I pay for the phone but it is not in my name, do i need to have my parents give consent for me to do this? like a signature? or can i go into a verizon store by. myself and do it without them