I have an iPhone 6s not jail broken I'd want to know how can I change the MAC address?

I have an iPhone 6s not jail broken I'd want to know how can I change the MAC address? - 1

You have to contact the Iphone customer care

Swap out all the parts and replace them with new parts.

Even if it was jailbroken that wouldn't have been possible

I don't think it is possible but you could have Leo Privacy Guard so as to guard all your personal images and videos through it and also you can lock various applications to add more security to your device.