Set up a new iPhone

Face ID uses the TrueDepth camera to build a mathematical model of your face, stored only on the device, and uses it to unlock and authorise.

Settings > Face ID & Passcode

Find My lets you locate your iPhone on a map, play a sound on it, mark it as lost, or erase it remotely, and it also enables Activation Lock.

Settings > Apple Account > Find My > Find My iPhone

Your passcode is the root of iPhone security: it encrypts your data, and Face ID or Touch ID are conveniences layered on top of it.

Settings > Face ID & Passcode > Change Passcode

The Software Update screen shows which iOS version you have, offers any update that is available, and holds the automatic update settings.

Settings > General > Software Update

The Wi-Fi screen joins networks, forgets them, and holds the per network privacy and data settings that matter most.

Settings > Wi-Fi

About holds the Model Name, Model Number, serial number, IMEI and the iOS version your iPhone is running.

Settings > General > About

iCloud Backup copies your device settings, app data, messages and photos to iCloud automatically when the phone is locked, charging and on Wi-Fi.

Settings > Apple Account > iCloud > iCloud Backup

iCloud Photos keeps one library in sync across every device signed into your Apple Account, which means a change on one device happens everywhere.

Settings > Apps > Photos > Sync this iPhone

A normal shutdown is in Settings under General, and a force restart uses a button sequence that differs by model generation.

Settings > General > Shut Down

Wallet holds your cards and Apple Pay authorises payments with Face ID or Touch ID, sending a device specific number rather than your real card number.

Settings > Wallet & Apple Pay

The Action button replaces the Ring and Silent switch and can be set to run the torch, the camera, a Focus, a shortcut or an accessibility feature.

Settings > Action Button

Touch ID reads your fingerprint and stores a mathematical representation in the Secure Enclave, never as an image and never off the device.

Settings > Touch ID & Passcode

Quick Start moves everything directly from your old iPhone to a new one, or you can restore from an iCloud or computer backup.

Settings > General > Transfer or Reset iPhone > Prepare for New iPhone

An eSIM is a cellular plan stored in the phone itself, added by scanning a code or through a carrier app, with no tray to open.

Settings > Cellular > Add eSIM

CarPlay shows a simplified version of your iPhone on the car's display, and the Settings screen controls which apps appear and how they are arranged.

Settings > General > CarPlay

Family Sharing lets up to six people share an iCloud storage plan, subscriptions and purchases, and gives a parent the controls needed for a child account.

Settings > Apple Account > Family Sharing

iMessage settings control which addresses receive messages, which one new conversations start from, and whether the service is on at all.

Settings > Apps > Messages > Send & Receive

You can set a browser other than Safari as the app that opens links from Messages, Mail and everywhere else.

Settings > Apps > Default Apps > Browser

This sets the system language, the region used for formatting dates, times, numbers and currency, and the measurement system.

Settings > General > Language & Region

You can add keyboards for other languages, emoji and third party apps, and switch between them with the globe key.

Settings > General > Keyboard > Keyboards

On the iPhone Duo the fingerprint sensor is built into the side button rather than a Home button, so you rest your finger on the button you already press.

Settings > Touch ID & Passcode

This sets whether the clock updates automatically from the network, which time zone you are in, and whether time is shown in 24 hour format.

Settings > General > Date & Time

Shortcuts run sequences of actions, and automations run them on a trigger such as a time, an alarm, arriving somewhere or tapping an NFC tag.

Settings > Apps > Shortcuts

Every preference returns to its default value while your apps, photos and messages stay exactly where they are.

Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings

You can set a mail app other than Apple Mail to handle email links and share sheet actions.

Settings > Apps > Default Apps > Mail

A trusted person can generate a code that helps you regain access to your Apple Account if you forget your password.

Settings > Apple Account > Sign-In & Security > Account Recovery

The name at the top of About is what appears in AirDrop, Personal Hotspot, Bluetooth pairing and on other people's screens.

Settings > General > About > Name

AutoFill can draw from the built in Passwords app or from a third party password manager you choose.

Settings > General > AutoFill & Passwords

The iPhone Duo has an outer display for quick use while folded and a larger inner display when opened, and settings control what carries across when you unfold.

Settings > Display & Brightness

Start something on your iPhone and finish it on a Mac or iPad signed into the same Apple Account.

Settings > General > AirPlay & Continuity > Handoff

USB-C iPhones can send video to an external display over a cable, either mirroring the screen or, in supporting apps, showing separate content.

Settings > General > AirPlay & Continuity