How do I transfer my phone number to an old phone I already have?

Make a appointment I I would like to make an appointment for tomorrow please b

Call Verizon. As long as your old phone will work with Verizon they should be able to activate it and send you a Sim card. Or have you go into a store and get a Sim card.

Take it in and have Verizon do it

Does your old phone have a sims card