This article explains how to set up a new iPhone running iOS 10 and later. The specific steps may vary depending on the version of the operating system you're running, but the basic process is the same.
How to transfer your data and set up your new iPhone | Apple Support
After you unbox and charge your new iOS device, follow these steps to get started using it.
Start by turning on/waking your iPhone by pressing and holding the sleep/power button in the upper-right corner or on the right edge, depending on your model. Swipe the slider to the right to start waking your iPhone.
Next, enter some information about the location where you’ll be using your iPhone. That involves selecting the language you want to display on the screen and setting your home country. Tap the language you want to use. Then tap the country you want to use the phone in and tap Next to continue.
