Set up a new iPhone Duo securely, the first 10 minutes

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Setting up iPhone Duo follows Apple's standard iPhone setup, with two differences Apple calls out for this model: it unlocks with Touch ID in the side button, and it's eSIM only. Do the security steps during setup, then check five settings before you start using it.

Quick answer

Turn the phone on, connect to Wi-Fi or mobile data, and activate your eSIM if asked. Set up Touch ID and a passcode (use Passcode Options for a longer one), sign in to your Apple Account and transfer your data. Then check two-factor authentication, Find My, Stolen Device Protection and the passcode settings.

What's different about setting up iPhone Duo?

The setup screens are Apple's usual ones, and Apple's article "Set up your iPhone or iPad" covers every iPhone. Apple's own iPhone Duo pages point out two things that change what you'll see.

  • Touch ID, not Face ID. Apple says iPhone Duo uses Touch ID integrated into the side button. During setup you'll be asked for your fingerprint rather than your face.
  • eSIM only. Apple says iPhone Duo has an eSIM-only design worldwide and isn't compatible with physical SIM cards. It supports two active eSIMs.

Apple also says iPhone Duo comes with iOS 27.1.

How do you set up iPhone Duo, step by step?

These are Apple's steps from its setup article, in order.

  1. Turn it on. Press and hold the power button until you see the Apple logo, then "Hello" in many languages.
  2. Choose text and icon size. Default, Medium or Large.
  3. Quick Start or manual. If you have another iOS device, Quick Start can set up the new one. Otherwise tap Set Up Without Another Device. Coming from Android, choose to move data on the Transfer Apps & Data screen.
  4. Activate. Connect to Wi-Fi, or tap Continue Without Wi-Fi to use the mobile network. Apple says you might be asked to activate your eSIM.
  5. Set up for you or for a child.
  6. Set up Touch ID and create a passcode. Follow the onscreen instructions for Touch ID, then set a six-digit passcode. Tap Passcode Options for a custom passcode.
  7. Restore or transfer your data. From an iCloud backup, a computer backup or an Android device, or choose Don't Transfer Anything.
  8. Sign in with your Apple Account. You might be asked for a verification code from your previous device.
  9. Turn on automatic updates and set up other features, such as Siri, Screen Time and Apple Pay.

Which passcode should you choose?

A longer one than the default if you can manage it. Apple says you need a passcode to use Touch ID and Apple Pay, and setup offers a six-digit code. Apple's Touch ID security article says that for better security you can choose a long, complex alphanumeric password: tap Passcode Options and select Custom Alphanumeric Code.

Avoid "no passcode" in Passcode Options. Without one, there's no Touch ID and no Apple Pay.

What should you check after setup?

Five settings, each from Apple's own support pages. Most may already be on, so this is a check rather than a chore.

  1. Two-factor authentication. Settings > [your name] > Sign-In & Security. Apple says most accounts already use it and that it's required for Apple Pay. It's also required for Stolen Device Protection.
  2. Find My. Settings > [your name] > Find My > Find My iPhone, and turn on Find My network and Send Last Location. Activation Lock turns on automatically with Find My.
  3. Stolen Device Protection. Settings > Touch ID & Passcode > Stolen Device Protection. Apple says it may be on by default.
  4. Your fingerprints. Settings > Touch ID & Passcode. Only your own fingers should be listed.
  5. Passcode options. In the same menu, look at Allow Access When Locked and Erase Data (below).

The details for each are in Turn on Stolen Device Protection on iPhone Duo and Find My and Activation Lock on iPhone Duo.

What do Allow Access When Locked and Erase Data do?

They decide what works on a locked phone and what happens after wrong guesses. Both are in Settings > Touch ID & Passcode, according to Apple's passcode article.

  • Allow Access When Locked controls which features work without unlocking. Apple lists Today View, Notification Centre, Control Centre, Siri, Reply with Message, Home Control, Wallet, Return Missed Calls and USB accessories. Turn off any you don't need on the Lock Screen.
  • Erase Data erases the device automatically after 10 failed passcode attempts. If you leave it off, Apple says the device will need to be restored on a computer after 10 failed attempts.

Apple also notes that if you use Touch ID or Apple Pay, you can't change the setting that asks for your passcode immediately after you lock the screen.

Does Stolen Device Protection move over from your old iPhone?

Yes, if you restore or transfer. Apple says that when you restore from iCloud Backup or transfer directly from a previous iPhone, your settings, including Stolen Device Protection, are restored. The protection resumes automatically on the new iPhone, though there may be a delay before it recognises your familiar locations.

Before you sell or trade in the old phone, Apple says to turn Stolen Device Protection off on it.

What about the old phone's passcode?

If you've carried the same passcode over to iPhone Duo and anyone else knows it, change it now. What to do if someone knows your iPhone passcode has Apple's steps, including Expire Previous Passcode Now.

Where Failshot fits

You've just chosen the passcode that unlocks your new Duo. Your passcode is the first layer. Failshot is the second.

Failshot for iPhone is coming soon. When it's out, you'll turn it on, leave Failshot open on its own screen and lock your iPhone, and whoever unlocks it into Failshot will be photographed. Get early access and we'll email you when Failshot for iPhone is ready.

Failshot for Mac is out now, for macOS 14 or later. It photographs whoever unlocks your Mac while it's on, then, with Pro, records a 5-second video.

More questions

Can I set up iPhone Duo without Wi-Fi?

Yes. Apple says you need Wi-Fi or a mobile network to activate. Tap Continue Without Wi-Fi, if it's offered, to use the phone's mobile network. On iPhone Duo that means an eSIM, which you might be asked to activate during setup.

Does iPhone Duo need a SIM card?

No. Apple says iPhone Duo has an eSIM-only design worldwide and isn't compatible with physical SIM cards. It supports dual eSIM, with two active eSIMs, and stores eight or more.

Can I use Quick Start to move to iPhone Duo?

Yes. Apple's setup article says that if you have another iOS device, you can use Quick Start to set up the new one automatically. With Stolen Device Protection on, Apple says using your old iPhone to set up a new device needs Touch ID or Face ID away from familiar places.

Should I use a four-digit passcode on iPhone Duo?

Apple offers it under Passcode Options, but Apple's Touch ID security article puts the odds of guessing a typical 4-digit passcode at 1 in 10,000 and suggests a long, complex alphanumeric password for better security.

Can I set up iPhone Duo from an Android phone?

Yes. Apple's setup article says to tap Set Up Without Another Device, then choose to move data from Android on the Transfer Apps & Data screen. Apple's iPhone Duo page names the Move to iOS app for this.

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