Getting the serial number from the command line like this can be helpful for troubleshooting. How to Get the Serial Number of a Mac from Command Line in OS X. Once you have a serial number, you can do things like check AppleCare warranty status and repair history. Tweet; More Related. By connecting the proper wires, a loopback test can verify the operation of serial communication. Loopback tests can be used for RS-232, RS-422, and RS-485 serial communication. I have just migrated a microcontroller app-dev from a PC to a COM-less Laptop and added a USB/Serial-adapter and now need to check it. - Nov 12, 2009 By Vijay.
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Apple has determined that a limited number of 128GB and 256GB solid-state drives (SSD) used in 13-inch MacBook Pro (non Touch Bar) units have an issue that may result in data loss and failure of the drive. 13-inch MacBook Pro units with affected drives were sold between June 2017 and June 2018.
Apple or an Apple Authorized Service Provider (AASP) will service affected drives, free of charge. Apple recommends having your drive serviced as soon as possible.
Apple will also send an email to customers, who registered their device with Apple, to let them know about this program.
First check to see which 13-inch MacBook Pro you have. Choose About This Mac from the Apple menu () in the upper-left corner of your screen. Confirm your model is 'MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports).' If you have that model, enter your computer's serial number below to see if it is eligible for this program.
This program does not affect 13-inch MacBook Pro with Touch Bar or older 13-inch MacBook Pro models.
Your 13-inch MacBook Pro will be examined prior to service to verify that it is eligible for this program and in working order.
Prior to service, it's important to do a full back up of your data because your drive will be erased as part of the service process.
- A technician will run a utility to update your drive firmware which will take approximately one hour or less.
- Your 13-inch MacBook Pro will be returned to you with macOS re-installed.
- After service, you will need to restore your data from a backup.
Since your computer will not be able to access the internet until after you do a restore, we recommend that you have another device, such as your iPhone, to view the Apple support article about restoring your data from backup.
Note: Any files that were already corrupted prior to service, cannot be restored.
Choose one of the options below to have your drive serviced.
- Find an Apple Authorized Service Provider.
- Make an appointment at an Apple Retail Store.
- Contact Apple Support to arrange mail-in service via the Apple Repair Center.
If your 13-inch MacBook Pro has any damage which impairs our ability to service the drive, that issue will need to be resolved prior to service. In some cases, there may be a cost associated with the repair.
This worldwide Apple program doesn't extend the standard warranty coverage of the 13-inch MacBook Pro.
If you believe your 13-inch MacBook Pro was affected by this issue, and you paid for service, you can contact Apple about a refund.
The program covers affected MacBook Pro models for 3 years after the first retail sale of the unit.
Every iPhone, iPad, Apple Watch, Apple TV, and Mac comes with a one year warranty against manufacturing defects and hardware failures. If you choose, you can also extend that warranty for additional years with AppleCare. Regardless of which warranty you have, you can easily find out whether or not your Apple products are currently covered. Here's how.
How to easily find the serial number for all of your devices using your Apple ID
When you sign in to your Apple ID profile page, you can see all of the devices you've got connected to that ID. When you click on a device, you can see its serial number.
- Sign into your Apple ID profile page using a web browser.
- Scroll down to Devices.
- Click on the device you need the serial number for.
You can copy the serial number and paste it into the text field in Apple's device warranty coverage checker.
How to find the serial number on your iPhone or iPad
If you don't have access to your Apple ID profile page, you can quickly look up the information, right on your iPhone or iPad.
- Open the Settings app.
- Scroll down and tap General.
- Tap About.
- View the Serial Number.
This information will be useful when checking the status of your AppleCare warranty through the Apple website.
How to view your warranty status on iOS 12.2
In the newest version of iOS, your iPhone will tell you right in the Settings what your warranty status is meaning you don't have to do it via the Apple warranty status webpage.
- Open the Settings app.
- Scroll down and tap General.
- Tap About.
Here you should be able to see if you have AppleCare+ with the expiry date or you should see Limited Warranty with an expiry date if you don't have AppleCare.
How to find the serial number on your Apple Watch
If you don't have access to your Apple ID profile page, you can quickly look up the information, right on your Apple Watch
- Press the Digital Crown to navigate to your Home screen on Apple Watch.
- Tap Settings
- Tap General.
- Tap About.
- Scroll down until you see Serial Number.
This information will be useful when checking the status of your AppleCare warranty.
How to find the serial number on your Apple TV
If you don't have access to your Apple ID profile page, you can quickly look up the information, right on your Apple TV.
- Launch Settings on your Apple TV.
- Click on General.
- Click on About.
- Scroll down until you see Serial Number.
You can use this information to check the warranty status of your Apple TV.
How to find the serial number on your Mac
If you don't have access to your Apple ID profile page, you can quickly look up the information, right on your Mac.
- Click on the Apple icon in the upper left corner of your Mac.
- Select About This Mac From the drop-down menu.
- Click the Overview tab to see your serial number. It is the last item on the list.
This information will be useful when checking the status of your AppleCare warranty.
How to check the status of your Warranty on iPhone, iPad, Apple Watch, Apple TV, and Mac
Once you have found the serial number for your iPhone, iPad, Apple Watch, Apple TV, or Mac, you can check the status of your AppleCare warranty from Apple's website.
- Navigate to Apple's Warranty Status page.
- Enter your device's serial number into the text field.
- Enter the CAPTCHA code to confirm that you are human.
- Click Continue.
You will be redirected to a summary page for the device you are checking on.
- Valid Purchase Date - This confirms that the item in question has, indeed, been purchased
- Telephone Technical Support: Active or Expired - If your telephone technical support is active, it will include the estimated expiration date. If it is expired, it will include whether or not the device is still eligible for the extended AppleCare warranty with a link to purchase it when eligible.
- Repairs and Service Coverage: Active or Expired - If your repairs and services coverage is active, it will include the estimated expiration date. If it is expired, it will include whether or not the device is still eligible for the extended AppleCare warranty with a link to purchase it when eligible.
- Covered by the AppleCare Protection Plan - If you have purchased the extended AppleCare warranty for your device, it will be listed here.
Any questions?
Do you have any questions about AppleCare? Let me know in the comments and I'll help you out.
Updated April 2019: Updated for latest software on all devices.
Backing up: The ultimate guide
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