How do I set up my new iPhone using my old iPhone?

General
1

I just bought a new iPhone and want to transfer everything from my old one, including apps, photos, messages, and settings. I’m not sure if I should use Quick Start, iCloud backup, or connect to a computer, and I don’t want to lose any data or mess up the setup. Can someone walk me through the best and safest way to set up my new iPhone from my old iPhone step by step?

2

Quick breakdown from someone who upgrades iPhones too often:

First, decide how you want to move stuff:

  1. Quick Start (phone to phone)
    Use this if:
    • Both phones are on iOS 12.4 or later
    • You have both phones with you
    • You want everything, including layout and settings, with the least effort

Steps:

  1. Charge both phones and connect to Wi‑Fi.
  2. Turn on the new iPhone and put it next to the old one.
  3. On the old iPhone, a pop‑up appears saying “Set Up New iPhone”. Tap Continue.
  4. A little pattern shows up on the new iPhone. Use the old phone’s camera to scan it.
  5. Choose “Transfer from iPhone” when asked.
  6. Keep both phones plugged in and near each other until the transfer finishes.

What it moves:
• Apps and app data
• Photos and videos
• Messages, call history, contacts
• Settings, Wi‑Fi, Home Screen layout, keyboard, etc
• Apple Watch pairing option

Good choice if you want the new phone to look almost identical to the old one.

  1. iCloud backup
    Use this if:
    • Your old phone is not with you later
    • You prefer not to keep both phones sitting together
    • You have enough iCloud storage

On old iPhone:

  1. Settings > [your name] > iCloud > iCloud Backup.
  2. Turn on iCloud Backup. Tap “Back Up Now”. Wait for it to finish.

On new iPhone:

  1. Turn it on, follow setup until “Apps & Data”.
  2. Pick “Restore from iCloud Backup”.
  3. Sign in with your Apple ID.
  4. Pick the latest backup.

Pros:
• Works even if phones are not side by side.
Cons:
• Slow if you have lots of photos and a weak Wi‑Fi connection.
• Needs enough iCloud space. Apple gives 5 GB, which is not enough for most people.

  1. Computer backup (Finder or iTunes)
    Use this if:
    • Your Wi‑Fi is bad or slow
    • Your backup is larger than your iCloud space
    • You want a full encrypted backup, including health data and passwords

On a Mac with macOS Catalina or newer:

  1. Plug old iPhone into Mac.
  2. Open Finder, select your iPhone in the sidebar.
  3. Check “Encrypt local backup” if you want passwords and health data moved. Set a password and remember it.
  4. Click “Back Up Now”. Wait until it finishes.

On Windows or older macOS:

  1. Install and open iTunes.
  2. Click the iPhone icon.
  3. Choose “Encrypt local backup”.
  4. Click “Back Up Now”.

Then restore to new iPhone:

  1. Turn on the new iPhone and start setup.
  2. On the “Apps & Data” screen, choose “Restore from Mac or PC”.
  3. Plug into the same computer.
  4. In Finder or iTunes, choose the backup and restore.

Pros:
• Usually the fastest for huge photo libraries.
• No iCloud storage limits.

Which method for you:
• If both phones are in front of you and on decent Wi‑Fi: Quick Start. It is the least annoying.
• If you rely heavily on Health data and passwords and want them moved for sure: encrypted computer backup or Quick Start.
• If you only have the new phone later: iCloud backup.

Extra tips:
• Before you start, on the old iPhone:
• Update to the latest iOS in Settings > General > Software Update.
• Check storage in Settings > General > iPhone Storage to see how big it is.
• Leave both phones plugged in during transfer.
• Keep the SIM or eSIM in mind:
• If you use physical SIM, move it after transfer finishes.
• If you use eSIM, the setup assistant usually offers to move it. Follow the prompts from your carrier.

If you want the easiest path with almost no thought, use Quick Start phone to phone. For most people, that works best and avoids iCloud storage issues.

3

If you want this to “just work” and also not bite you later, I’d think about it slightly differently than @viaggiatoresolare did: instead of “which transfer method is easiest,” think “what do I not want to risk losing?”

Here’s how I’d pick, plus a couple of things people usually forget.

1. Pick based on what matters most

A. You care about: passwords, Health, Watch data, text history from years ago

Use encrypted computer backup as your master copy, then optionally use Quick Start after you’ve made that backup.

Why:

  • Encrypted local backup is still the most complete and controllable snapshot.
  • If Quick Start fails halfway (it does sometimes), you still have a full backup on your Mac/PC.
  • If your new phone ever needs a full reset, you’re not at the mercy of iCloud storage.

My order of operations in real life:

  1. On old iPhone, plug into Mac/PC and do encrypted backup.
  2. Once that’s done, then use Quick Start to bring up the new phone.
  3. If Quick Start glitches or you realize something is missing, erase the new phone and restore from that computer backup.

So I don’t fully agree with the idea that Quick Start is always the default best. It’s best paired with a real backup.

B. You just want the new iPhone to mirror the old one with almost no thinking

Then yeah, Quick Start wins. But prevent the usual pain points:

  • Before starting:
    • Turn off Low Power Mode on the old phone.
    • Make sure both are at least ~50% battery or plugged in.
    • Temporarily disable any VPNs or weird Wi Fi profiles.
  • During:
    • Don’t try to use either phone heavily while it’s moving data.
    • Expect apps and photos to keep downloading for hours in the background, especially on slower Wi Fi.

Quick Start is “magical” until it hangs at 1 minute remaining for 45 minutes. If it does, cancel, reboot both phones, and try again. This is where that prior computer backup keeps your stress level sane.

C. Your Wi Fi is decent, you don’t own a computer, and you’re patient

Then iCloud backup / restore is fine, but only if:

  • You actually have enough iCloud space.
  • You’re willing to let photos and apps trickle back over time.

Reality check: that free 5 GB tier is a joke for full device backups. So unless you’ve paid for more, I’d skip relying on it as your only method.

2. Things everyone forgets during setup

These matter more than which transfer option you pick:

  1. SIM / eSIM

    • Physical SIM: move it after the data transfer so calls/messages don’t hit a half set up phone.
    • eSIM: follow the carrier prompts on the new phone; don’t delete eSIM from the old one until the new one has service and can make a test call.

  2. 2FA & banking apps

    • Authenticator apps (Google Authenticator, Authy, etc.): some transfer easily, some don’t. Check each one once the new phone is running.
    • Banking apps often need re login or SMS verification. Have your SIM sorted before you start messing with these.

  3. Messages in iCloud vs device only

    • If you use Messages in iCloud, a new phone may look like it restored your texts, but it’s actually just syncing from iCloud.
    • If you don’t use Messages in iCloud, then your backup method really matters. Another reason I prefer an encrypted local backup over only iCloud device backup.

  4. Photos

    • Using iCloud Photos: transfer is mostly about settings. Your actual photos will pull from iCloud anyway.
    • Not using iCloud Photos: Quick Start or encrypted local backup is much safer than iCloud device backup, otherwise you may hit space or time limits.

3. Which combo would I use in your situation?

Given you want everything and you’re unsure:

  1. On old iPhone:
    • Update iOS.
    • Make an encrypted backup to Mac/PC.
  2. Then:
    • Use Quick Start from old phone to new phone.
  3. After setup:
    • Verify critical stuff:
      • Photos count looks similar.
      • Messages history shows old threads.
      • Health app data is present.
      • Passwords auto fill in Safari.
  4. Only once you’re sure:
    • Wipe the old phone or move SIM / eSIM fully.

This way you get the “easy” of Quick Start without gambling your entire digital life on one wireless transfer that might decide to be moody that day.

If you say what you don’t have (no computer, tiny iCloud plan, etc.), you can trim this to the least annoying path pretty quick.