The first step in activating your iPhone is to set the location where you'll be using it. That involves selecting the language you want the phone to work in (what language will be shown onscreen) and set your home country.
Begin by tapping on the language you want to use and then tap the Next button in the top right corner of the screen.
With that done, tap on the country you want to use the phone in (this won't prevent you from using it elsewhere, but it determines what your home country is) and tap the Next button.
