How to Find the Serial Number for Your iPhone

Every iPhone has a unique serial number — a string of letters and numbers that identifies your specific device. You'll need it for warranty checks, AppleCare support, trade-ins, insurance claims, and verifying whether a used iPhone is legitimate. The good news: there are several ways to find it, and most take under 30 seconds.

Why Your iPhone Serial Number Matters

The serial number isn't just a formality. Apple uses it to:

• Confirm your device's warranty status and coverage dates
• Verify eligibility for repairs or replacements
• Identify the exact model, configuration, and manufacturing details
• Check whether a device has been reported lost or stolen
• Process trade-in and resale transactions accurately

It's different from your IMEI number, which is used by carriers for network identification. Both are useful, but they serve different purposes.

Method 1: Check in the iPhone's Settings App 📱

This is the fastest method if your iPhone is powered on and accessible.

1. Open the Settings app
2. Tap General
3. Tap About
4. Scroll down to Serial Number

You can press and hold on the serial number to copy it to your clipboard — useful if you're pasting it into Apple's warranty checker or a support form.

This method works on all iPhone models running any modern version of iOS.

Method 2: Find It in the Apple ID / iCloud Account

If you manage multiple Apple devices or need the serial number remotely, your Apple account keeps a record.

1. Go to appleid.apple.com in a browser
2. Sign in with your Apple ID
3. Scroll to the Devices section
4. Select your iPhone from the list
5. The serial number appears in the device details panel

This is also available through the Settings app on any Apple device:

1. Tap your name at the top of Settings
2. Scroll down to see your list of devices
3. Tap the iPhone in question
4. The serial number is listed there

This method is especially useful when the iPhone itself isn't with you or isn't turning on.

Method 3: Check the Physical Packaging

If you still have the original box your iPhone came in, the serial number is printed on a label on the outside of the box — usually on the back or bottom panel alongside the model number and barcode.

This is a reliable fallback if the device is damaged, locked, or inaccessible. It's also a useful way to verify that a used iPhone's serial number matches what the seller claims.

Method 4: Check in iTunes or Finder (via Computer)

If your iPhone is connected to a Mac or PC, you can retrieve the serial number through desktop software.

On a Mac running macOS Catalina or later:

1. Open Finder
2. Connect your iPhone via USB
3. Select your iPhone in the Finder sidebar
4. The serial number appears in the device summary panel
5. Click on it once to switch between serial number, UDID, and IMEI

On a Mac running macOS Mojave or earlier, or on a Windows PC:

1. Open iTunes
2. Connect your iPhone via USB
3. Click the iPhone icon near the top left
4. Click on the Summary tab
5. Click the serial number field to cycle through identifiers

Method 5: Read It Directly from the Device (Older iPhones)

On some older iPhone models, the serial number is physically engraved on the hardware:

For iPhones with a SIM card tray, you may also find the IMEI printed there, though the serial number is less commonly accessible this way on newer models.

What If the iPhone Won't Turn On?

If the device is completely unresponsive, your options shift:

• Original packaging is your most reliable physical source
• Apple ID account (appleid.apple.com) will show registered devices
• Previous iTunes or Finder backups may display device info in software
• Receipt or purchase record from Apple or a carrier may include the serial number

If the iPhone was never registered to your Apple ID — common with second-hand purchases — the box or a repair record may be the only non-device sources available.

Verifying a Serial Number with Apple 🔍

Once you have the serial number, you can verify device details at:

checkcoverage.apple.com

Enter the serial number and Apple will show you the estimated purchase date, warranty status, and whether the device is eligible for support. This is particularly valuable when evaluating a used iPhone before buying.

Variables That Affect Which Method Works for You

Not every method works in every situation. The right approach depends on a few factors:

• Whether the device powers on — eliminates Settings and About as options if it doesn't
• Whether the iPhone is registered to your Apple ID — determines whether the account method works
• iOS version — the Settings path is consistent across modern iOS, but older firmware may display differently
• Access to original packaging — not everyone keeps boxes
• Whether you have a trusted computer — required for the Finder or iTunes method

Someone troubleshooting a broken phone they've owned for years has a different situation than someone trying to verify a used iPhone before purchase. The physical box, Apple ID account, and device Settings each fill different gaps depending on what's accessible at the time.