Originally Posted by @home
No No No - UK Here I always buy my devices Sim Free - Never go near a carrier.
There's a good lad.
Well, out of the box only Sonys, HTCs and Nexuses come with a locked bootloader, but the HTCs and the Nexuses are brutally easy to unlock.
International SIM free Samsungs don't have a locked bootloader, and the Knox is there only to tell Samsung representatives that your warranty is void. xD