How to Back Up Your iPhone: iCloud vs Computer Backup Explained

Written by the M1 Content Team · Last updated: 28 August 2026

The short answer: back up your iPhone via iCloud (automatic, no computer needed) or via Mac/PC (better for large photo libraries and free storage).

iCloud suits most people since it runs automatically once enabled; a computer backup makes sense if your photos alone would exceed free iCloud storage, or if you want an encrypted local copy that includes saved passwords.

Whichever you choose, do it before any trade-in, factory reset, or device change — once reset, anything not backed up is unrecoverable.

Backing up your iPhone is one of those things that's easy to put off until you actually need it — and by then it's too late. Whether you're preparing to trade in your device, switching to a new iPhone, or just want peace of mind, a proper backup takes a few minutes and can save you from losing years of photos, messages, and app data.

This guide covers both ways to back up an iPhone, how they differ, and how to make sure your backup actually captured everything before you need it.

Why Backing Up Matters

A backup isn't just for emergencies. It matters any time you're about to change something significant about your device — trading it in, factory resetting it, sending it in for repair, or simply moving to a new iPhone. It's also your safety net against the more mundane risks: a lost or damaged phone, a failed software update, or accidentally deleting something you needed.

The peace of mind is worth the few minutes it takes, and once automatic backups are set up properly, you rarely have to think about it again.

Method 1: Backing Up to iCloud

iCloud backup is the simplest option because it happens over Wi-Fi without needing a computer.

1. Connect your iPhone to Wi-Fi

2. Go to Settings > [your name] > iCloud > iCloud Backup

3. Make sure Back Up This iPhone is toggled on

4. Tap Back Up Now to trigger an immediate backup, or leave it to back up automatically overnight while charging and connected to Wi-Fi

What's included: photos and videos (if not already using iCloud Photos), device settings, app data, message history, ringtones, and health data.

Storage limits: Apple provides a small amount of free iCloud storage, which fills up quickly once photos and videos are included. If your backup exceeds your available iCloud storage, you'll need to either upgrade your iCloud+ plan or use a computer backup instead.

Method 2: Backing Up to a Mac or PC

A computer backup doesn't rely on iCloud storage limits at all, since everything saves directly to your computer's hard drive.

On a Mac (macOS Catalina or later)

Connect your iPhone to your Mac with a cable
Open Finder and select your iPhone from the sidebar
Choose Back up all of the data on your iPhone to this Mac
Click Back Up Now

On a PC or Older Mac (Using iTunes)

Connect your iPhone and open iTunes
Select your device
Under Backups, choose This Computer
Click Back Up Now

Tip: Ticking “Encrypt local backup” saves your saved passwords and health data too, which aren't included in an unencrypted computer backup.

iCloud vs Computer Backup: Which Should You Use

Here's a quick side-by-side before the detail below:

Method	Best For	Storage
iCloud Backup	Automatic backups with no computer needed; ideal if you don't regularly connect to a Mac or PC	Limited free storage — paid iCloud+ upgrade usually needed once photos/videos are included
Computer Backup (Mac/PC)	Large photo/video libraries, no ongoing subscription cost, or an encrypted local copy that includes saved passwords	Limited only by your computer's own storage — no Apple storage tier to pay for

Choose iCloud if: you want backups to happen automatically without plugging in, you're comfortable paying for extra iCloud storage if needed, or you don't have regular access to a computer.

Choose a computer backup if: you have a large photo/video library that would eat through iCloud storage quickly, you want a backup with no ongoing subscription cost, or you want an encrypted local copy that includes saved passwords.

Best of both: many people do occasional computer backups (especially before a major device change) while keeping iCloud backup running automatically in the background for day-to-day peace of mind. The two aren't mutually exclusive.

What's Included in a Backup — and What's Not

Most personal data is covered: photos, messages, contacts, calendars, notes, app data, device settings, and call history.

A few things are worth knowing about specifically:

Face ID and Touch ID data never gets backed up or transferred — you'll always need to re-set this up on any device
Apple Pay cards need to be re-added manually on a new device for security reasons
Some third-party app data depends on whether that app supports iCloud or local backup — most major apps do, but it's not universal
Health data is only included in an encrypted backup (either an encrypted computer backup, or iCloud if you're signed into Health)

How to Check When Your Last Backup Happened

For iCloud: go to Settings > [your name] > iCloud > iCloud Backup, and the date and time of your last successful backup is shown at the bottom.

For computer backups: in Finder or iTunes, select your device and check the backup section — it shows the date and time of the most recent backup, along with whether it was encrypted.

Checking this before any major change to your device takes ten seconds and confirms you're not relying on a backup that's months out of date.

Setting Up Automatic Backups So You Never Have to Think About It

Once Back Up This iPhone is enabled under iCloud settings, your phone will back up automatically whenever it's locked, connected to Wi-Fi, and charging — typically overnight. There's nothing further to do beyond occasionally checking the backup date to confirm it's still running as expected.

Backing Up Before a Trade-In or Factory Reset

If you're preparing to trade in your iPhone, a completed, verified backup is a non-negotiable first step — not just a nice-to-have. Once a factory reset happens as part of the trade-in process, anything not backed up is gone for good. For the full trade-in preparation checklist, including what else needs to happen before handing your device over, see our trade-in value guide.

How to Restore From a Backup on a New iPhone

When setting up a new or newly reset iPhone, you'll be prompted during setup to restore from a backup. Choose either iCloud Backup or Restore from Mac or PC, select the backup you want, and your photos, apps, and settings will transfer over automatically. Larger backups can take a while to fully restore, especially photo libraries, so it's normal for everything to keep populating in the background for a few hours after setup finishes.

If you're setting up a brand-new device, take a look at the current iPhone lineup first, so you know exactly what you're restoring your backup onto.

Frequently Asked Questions

Is iCloud backup enough, or should I also back up to a computer?

iCloud backup alone is sufficient for most people, especially with automatic backups enabled. A computer backup is worth adding if you have a large photo or video library, want a free backup with no storage limit, or want the added protection of an encrypted local copy.

How much iCloud storage do I need to back up my iPhone?

It depends entirely on your photo and video library size, since that's usually the largest component. Check your current iPhone Storage breakdown in Settings to estimate — if your photos and videos alone exceed your free iCloud storage, you'll need to upgrade your plan or use a computer backup instead.

Does backing up include my photos and WhatsApp messages?

Yes to both, provided WhatsApp is set to back up to iCloud in its own in-app settings (WhatsApp manages its own backup separately from the general iPhone backup, so it's worth checking that setting specifically).

How do I know if my iPhone backup actually worked?

Check the backup date and time shown in Settings > iCloud Backup (or in Finder/iTunes for computer backups). If it shows a recent date and no error message, the backup completed successfully.