I see that Sprint has directions on their website to activate new phones from home. I'd like to do that when my 6s arrives, as I don't really want to go to the sprint store... Anyone ever do this?
I've had Sprint for about six years and have activated at least ten phones between my wife and I without ever stepping foot inside of a store. If you can't activate it online just call them.
I see you have posted the same question on four different threads. It's always easier to start one new thread with your question in so that multiple people don't answer different threads and we all have to search around in four different threads for the answer.
In all honesty, for us to meaningfully answer your question, it would be helpful to have more information. However, if you have a valid sim card of the correct size, put it into your 5s and follow he instructions on screen.