How to Back Up Your iPhone with Time Machine

Can Time Machine Back Up an iPhone?

Not directly — Time Machine only backs up Macs. But there is a clean, fully supported way to get your iPhone into Time Machine anyway: back the iPhone up to your Mac first. Since macOS Catalina, Finder (which replaced iTunes for this job) can create a complete local backup of your iPhone on your Mac's disk. That backup is just data on your Mac, so Time Machine includes it in its next automatic run like any other folder.

Chain the two together and you get something neither iCloud Backup nor a bare local backup gives you: a versioned history of your entire iPhone, stored off-site. If your iPhone is lost, stolen, or replaced — and even if your Mac dies at the same time — the backup lives on in the cloud.

What You Need

• A Mac running macOS Catalina or later (Finder handles iPhone backups since 2019)
• Your iPhone and a USB or USB-C cable for the first connection
• Enough free space on the Mac for the backup (typically 5–50 GB depending on your iPhone)
• Time Machine already backing up your Mac — ideally to a cloud destination like Capsule Backup so the result is off-site. Not set up yet? Follow the no-external-drive Time Machine guide first.

Step 1: Connect Your iPhone to Your Mac

Plug the iPhone in with a cable. The first time you connect it to this Mac, two prompts guard the door: macOS may ask you to allow the accessory to connect, and the iPhone will show Trust This Computer? — unlock the iPhone, tap Trust, and enter your passcode. This pairing is what authorizes backups; you only do it once per Mac.

Step 2: Open Your iPhone in Finder

Open a Finder window. Your iPhone appears in the sidebar under Locations, next to your drives and network volumes. Click it, then make sure the General tab is selected — this is the old iTunes device screen, now living where it always belonged.

Step 3: Turn On Local Backups and Automatic Sync

In the Backups section of the General tab:

1. Select "Back up all of the data on your iPhone to this Mac" — this switches backups from iCloud to your Mac.
2. Enable "Encrypt local backup" and choose a password. Strongly recommended: only encrypted backups include your saved passwords, Wi-Fi settings, call history, and Health data. Store that password in a password manager — Apple cannot reset it, and an encrypted backup without its password is unreadable.
3. Check "Sync automatically when this iPhone is connected" so future backups happen on their own whenever you plug in.
4. Optional but worth it: enable "Show this iPhone when on Wi-Fi". After this first cable session, the iPhone can back up to the Mac wirelessly whenever both are on the same network.

Step 4: Run Your First iPhone Backup

Click Back Up Now. The first backup takes a while — everything on the iPhone crosses over. When it finishes, the Latest backup line under Backups shows today's date and time. That is your confirmation.

Where did it go? Finder stores iPhone backups here:

~/Library/Application Support/MobileSync/Backup/

You never need to touch this folder — but its location is the whole trick, because it sits squarely inside what Time Machine protects.

Step 5: Let Time Machine Carry It to the Cloud

There is no step 5 to perform — that's the point. Time Machine includes your user Library by default, so the MobileSync folder rides along in the next automatic backup. With Capsule Backup as your Time Machine destination, your iPhone backup is now encrypted, versioned, and stored in a European datacenter, refreshed every time Finder updates the local backup.

One thing to verify, once: open System Settings → General → Time Machine → Options and make sure ~/Library (or the MobileSync folder) is not in the exclusion list. If you never touched the exclusions, you're covered.

How This Compares to iCloud Backup

This isn't an either/or — many people run both — but it helps to know what each covers:

• iCloud Backup is effortless and works anywhere, but it keeps only the latest state of your iPhone, counts against your paid iCloud storage, and excludes data that is "already in iCloud" (Photos, Messages in iCloud) from the backup itself.
• An encrypted Finder backup is more complete — saved passwords, Health data, Wi-Fi settings — and costs no subscription on its own. Its weakness alone: it lives on one Mac.
• Finder backup + Time Machine + cloud removes that weakness. The backup becomes versioned (hourly/daily/weekly snapshots) and off-site. If both your iPhone and your Mac fail, the chain still holds.

If you're weighing the sync-versus-backup question more broadly, our guide on why upgrading iCloud storage doesn't fix backup covers it in depth.

Restoring Your iPhone from a Time Machine Backup

Three scenarios, from most to least common:

1. Restore the latest backup (new or erased iPhone): connect the iPhone, open it in Finder, click Restore Backup…, pick the backup, enter your encryption password. This uses the local copy directly — no cloud round-trip needed.
2. Restore an older version: recover the MobileSync folder as it existed on an earlier date from Time Machine (browse your Capsule Backup volume or use the Time Machine browser), put it back in place, then run Restore Backup… in Finder. This is how you reach the state of your iPhone from before something went wrong.
3. New Mac: restore the Mac itself via Migration Assistant from your Time Machine backup — the MobileSync folder, and with it your iPhone backup, comes back automatically.

How Much Space Do iPhone Backups Use?

Plan for the size of the data actually on your iPhone: a lightly used phone backs up in single-digit gigabytes, a photo-heavy one can reach 50 GB or more. After the first run, Finder updates rather than duplicates the backup, and Time Machine stores changes incrementally — so the ongoing cost is far smaller than the first backup suggests. On a 1 TB Capsule Backup plan, a Mac plus one or two iPhone backups fits comfortably for most people.

Troubleshooting Quick Fixes

• iPhone doesn't appear in Finder — try another cable or port, unlock the iPhone, and re-answer the Trust prompt. Check Finder → Settings → Sidebar → "CDs, DVDs and iOS Devices" is enabled.
• Backup fails midway — keep the iPhone unlocked and plugged in for the first run, and confirm the Mac has enough free disk space for the full backup.
• Forgot the encryption password — it cannot be recovered. On the iPhone, Settings → General → Transfer or Reset iPhone → Reset → Reset All Settings clears the backup password (your data stays), then set a new one in Finder and run a fresh backup.
• Wi-Fi backups not happening — both devices must be on the same network with the Mac awake; the option only appears after at least one successful cable session.