Apple Plans to Switch to Randomized Serial Numbers for Future Products Starting in 2021 [Updated]
In an internal memo shared with Apple Authorized Service Providers, Apple has indicated that it plans to update its serial number format to a randomized alphanumeric string for future products starting in late 2020 (update: Apple now says 2021). Apple says all serial numbers that exist before the change is made will remain the same.

Apple already uses alphanumeric serial numbers, but it has long been possible to determine the date and location that a product was manufactured based on the current format. Readers would often use serial numbers to glean more information about their devices. The randomized format would likely not be decipherable, or at least hard to, and it could also help to reduce fraud.
The memo was published today and obtained by MacRumors from a reliable source. It is unclear if the change will apply worldwide.
Update: Apple has delayed this change until some point in 2021, according to an internal document viewed by MacRumors.
Popular Stories
We've still got months to go before the new iPhone 17 models come out, but a combination of dummy models and leaks have given us some insight into what we can expect in terms of camera changes.
Apple is adding new camera features, and changing the design of the camera bump for some models. You might be skeptical of dummy models, but over the years, they've proven to be a highly accurate...
Apple's former design chief Jony Ive long dreamed of an iPhone with a truly all-screen design, and his wish might finally become reality in a few more years.
The Information today cited multiple sources who said that at least one new iPhone model launching in 2027 will have a truly edge-to-edge display. The device's front camera and Face ID system would both be placed under the screen....
Apple's rumored iPhone 17 Air model will have "worse" battery life compared to previous iPhone models, according to a paywalled The Information report.
In internal testing, Apple determined that the percentage of users who will be able to use the iPhone 17 Air for a full day without needing to recharge the device throughout the day will be between 60% and 70%, according to the report. For...
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
Apple's is continually working with suppliers on successive iPhone models simultaneously, which is why we often get rumored features so far ahead of launch. The iPhone 18 series is no different, and we already have a picture forming of what to expect from Apple's 2026 smartphone lineup.
If you're skipping this year's upcoming iPhone 17 series, or just plain curious about Apple's plans...
Apple's two-generations-away iPhone 18 Pro models will likely feature under-screen Face ID, according to The Information.
The paywalled report today cited a source who said the iPhone 18 Pro and iPhone 18 Pro Max will have only a small hole in top-left corner of the screen, to accommodate the front-facing camera, with all Face ID hardware moved under the screen.
With under-screen Face ID, ...
Starting in 2026, Apple plans to change the release cycle for its flagship iPhone lineup, according to The Information. Apple will release the more expensive iPhone 18 Pro models in the fall, delaying the release of the standard iPhone 18 until the spring.
The shift may be because Apple plans to debut a foldable iPhone in 2026, which will join the existing iPhone lineup. The fall release...
On this week's episode of The MacRumors Show, we look at what to expect from the 2025 Apple Watch lineup when new models launch in the fall.
Subscribe to The MacRumors Show YouTube channel for more videos
The Apple Watch Series 11 is anticipated to offer hypertension detection as the device's next major health monitoring advancement, potentially with AI-powered health-coaching features. It is ...