Where to find your device information across platforms

Your device has several identifying numbers and details built into its system — a serial number, model name, operating system version, and unique hardware identifiers. You need these when troubleshooting problems with support staff, registering for warranty coverage, or checking whether a device is compatible with software updates. The location of this information differs sharply between Windows, Mac, iPhone, and Android, but each platform puts it in one or two standard places.

Finding this information takes less than two minutes once you know where to look. You do not need to open your device, install anything, or contact the manufacturer. The details are already visible in your system settings.

Key Takeaways

  • Windows devices show serial number and model in Settings > System > About, or by typing "msinfo32" into the search box and opening System Information.
  • Mac computers display this information in the Apple menu > About This Mac, which also shows your processor type and total storage.
  • iPhones and iPads store their serial number and model in Settings > General > About, where you can also find your device name and storage capacity.
  • Android phones vary by manufacturer, but Settings > About Phone typically contains the serial number, model name, and Android version.
  • Write down or take a screenshot of your serial number and model name before you contact support, since they will ask for both.

Finding information on a Windows computer

Open Settings by pressing the Windows key and typing "settings", then select the Settings app. Once it opens, click System on the left side, then scroll down and click About. You will see your device name, processor type, installed RAM, and system type. Scroll down further to find your device serial number under "Device specifications".

If you need more detailed hardware information — such as your BIOS version or network adapter details — type "msinfo32" into the Windows search box and open System Information. This window shows everything your computer knows about itself. The serial number appears under "System Summary" as "System Serial Number".

Finding information on a Mac

Click the Apple menu in the top-left corner of your screen and select About This Mac. A window opens showing your Mac model name, processor, memory, and storage. Your serial number appears in this same window under "Serial Number (or Serial)". If you do not see it when ready, look for a line that starts with "Serial Number:" — on newer Macs this may be labeled "Hardware UUID" or "Serial Number".

For additional details like your Mac's age or warranty status, you can use the serial number to check Apple's coverage page. Write down the exact serial number as it appears — it contains both letters and numbers, and a single character wrong will not match.

Finding information on an iPhone or iPad

Open Settings and tap General, then tap About. The first screen shows your device name at the top, followed by your model name (such as "iPhone 14 Pro" or "iPad Air"), capacity, and iOS or iPadOS version. Scroll down on this same screen to find your serial number, listed as "Serial Number". You will also see your IMEI number if you have a cellular model.

The serial number on Apple devices is always 12 characters long and contains letters and numbers. If you are setting up a replacement device or registering for support, this is the number Apple support staff will ask for first.

Finding information on an Android phone

Open Settings and scroll down to find About Phone or Device Information — the exact name varies by manufacturer. Tap it. On this screen you will see your device model name, Android version, and build number. Your serial number may be listed as "Serial Number" or "Device Serial Number" on this same screen.

If you do not see the serial number in About Phone, try Settings > System > About Phone, or look for a separate "Device Information" section. Some manufacturers like Samsung place it under Settings > About Phone > More Information. If you still cannot find it, the serial number is printed on the back of your phone under the battery — though you should check the settings first since that number is harder to read.

What each piece of information means

Your serial number is a unique identifier assigned to your specific device at the factory. No two devices have the same serial number. Support staff use this to look up your device's history, warranty status, and any recalls that explore to it.

Your model name tells you the product line — iPhone 14, Galaxy S23, MacBook Air M2. This matters because software updates, compatible accessories, and repair parts differ by model. A charger that works for one model may not work for another, even from the same manufacturer.

Your operating system version (Windows 11, iOS 17, Android 13) determines which apps you can install and which security patches you have received. Support staff often ask for this because problems are sometimes specific to one version.

Your processor type and RAM affect how fast your device runs and how many apps you can have open at once. These details matter when you are troubleshooting slowness or checking whether your device can run a new process.

Taking a screenshot or writing it down

Once you have found your information, take a screenshot or write down at least your serial number and model name. Store this somewhere you can find it quickly — a notes app, a document, or a photo in your phone's camera roll. If your device stops working, you will not be able to access Settings to look up the serial number again.

When you contact support, have this information ready before you call or chat. Support staff will ask for it within the first minute, and having it written down saves time and prevents you from misreading a number over the phone.

Frequently Asked Questions

What if I cannot find the serial number in Settings?

Check the physical device itself — the serial number is usually printed on the back, under the battery (on older phones), or on the box the device came in. For laptops, it may be on the bottom case. If the device is too damaged to read, contact the manufacturer with your proof of purchase instead.

Do I need to give my serial number to anyone who asks?

Only give it to official support staff from the manufacturer or your service provider. Do not share it in public forums or with people you do not know. Scammers sometimes use serial numbers to impersonate you or claim your device is registered to them.

Will finding this information void my warranty?

No. Looking at your device settings does not change anything on your device and does not affect your warranty in any way. You are only reading information that is already stored there.

What is the difference between a serial number and an IMEI?

A serial number identifies your specific device. An IMEI (International Mobile Equipment Identity) is a separate number that identifies your phone on cellular networks. Only phones with cellular service have an IMEI. Support staff usually ask for the serial number, but some carriers need the IMEI for account purposes.

Can I look up someone else's device information?

Not without physical access to their device or their account credentials. Device information is stored locally on the device itself and in the manufacturer's account system. This is intentional — it prevents someone from accessing your information without your permission.