Do I need to purchase a sim card from my provider before my old phone will work as a camera for this app?
Nope. Just add app n link em up. I’ve got 4 myself. Caught an employee goin thru my business books when I was at the Dr office. Went back n asked him what he was doing I’m my OFF LIMITS cabinet. He told me it wasn’t him. Whoever told me got it wrong. I pulled up recorded video n told him this told me, n it DIDIN’T get it wrong. Pack up n get out. That particular fone, Gz 1, was bout 4 or 5 years old. I found it in one of my drawers. I even forgot about it. If you have internet where you put fone, you have camera.