Apple Seeds First iOS 10.2.1 and macOS Sierra 10.12.3 Betas to Public Beta Testers

Apple today seeded the first public betas of both iOS 10.2.1 and macOS Sierra 10.12.3 to public beta testers, one day after seeding the two new releases to developers and two weeks after releasing iOS 10.2 and macOS Sierra 10.12.2.

Beta testers who have signed up for Apple's beta testing program will receive the new iOS 10.2.1 beta update over-the-air after installing the proper certificate on their iOS device, and macOS Sierra 10.12.3 can be installed using the Software Update mechanism in the Mac App Store.

ios-10-2-1-beta
Those who want to be a part of Apple's beta testing program can sign up to participate through the beta testing website, which gives users access to both iOS and macOS Sierra betas. Betas are not stable and include many bugs, so they should be installed on a secondary device.

macos-10-12-3-beta
No major outward-facing changes were discovered in the developer betas of macOS Sierra 10.12.3 or iOS 10.2.1, suggesting they are both minor updates that focus on bug fixes and under-the-hood changes rather than major new features.

Related Forums: iOS 10, macOS Sierra

Popular Stories

Apple Shopping Event 2025

Apple Announces 2025 Black Friday Event, Here's What You Can Get

Thursday November 20, 2025 6:28 am PST by
Apple's annual four-day Black Friday through Cyber Monday shopping event is returning on Friday, November 28 through Monday, December 1 in many countries, including the United States, Canada, Australia, New Zealand, France, Germany, Italy, Spain, the United Kingdom, Belgium, the Netherlands, Sweden, Thailand, and others. During the shopping event, customers can get an Apple gift card with...
iOS 26

iOS 26.2 Adds These New Features to Your iPhone

Thursday November 20, 2025 10:50 am PST by
iOS 26.2 is currently in beta testing. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics for Apple Music, and more. In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date. Keep reading...
hikawa phone grip stand apple%402x

Apple Launches Second Limited-Edition iPhone Accessory in a Month

Friday November 21, 2025 3:53 am PST by
Apple has begun selling the Hikawa Phone Grip and Stand, a new limited-edition iPhone accessory designed with accessibility in mind. Designed by LA-based Bailey Hikawa to celebrate the 40th anniversary of accessibility at Apple, the grip uses magnets to securely snap onto any iPhone with MagSafe. Apple says it can be removed with ease, and doubles as a stand with two different viewing...
iPhone 17 Pro Cosmic Orange

10 Reasons to Wait for Next Year's iPhone 18 Pro

Wednesday November 19, 2025 4:00 am PST by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
ipad black friday 2025

The Best Early Black Friday iPad Deals

Thursday November 20, 2025 10:20 am PST by
Black Friday is just over a week away, and iPad deals have finally started to flood in at retailers like Amazon and Best Buy. Below we're tracking discounts on every current generation iPad, including lowest-ever prices on M3 iPad Air and M5 iPad Pro, plus steep markdowns on iPad and iPad mini. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a ...
ipad mini 7 feature red and blue

iPad Mini 8: Four Major New Features to Expect

Wednesday November 19, 2025 7:50 am PST by
Apple's eighth-generation iPad mini is highly likely to arrive next year, offering a significant refresh of the device with at least four major new features. OLED Display The next-generation version of the iPad mini could feature an OLED display, as part of Apple's plan to expand the display technology across many more of its devices. Apple's first OLED device was the Apple Watch in 2015, ...
watchos 26 workout app

Apple Watch Users Claim Workout App Is Now Worse in Every Way

Thursday November 20, 2025 7:01 am PST by
Apple Watch owners have been voicing their frustration online over changes to the Workout app that Apple introduced in watchOS 26, with many finding the redesigned interface makes starting exercises difficult and exasperating. When Apple launched watchOS 26 in September, the Workout app went from large, easily tapped workout tiles to a scrolling, corner-button interface. Instead of tapping a ...
apple wallet drivers license feature iPhone 15 pro

Two More U.S. States Commit to Offering iPhone Driver's Licenses in Apple Wallet App

Thursday November 20, 2025 8:21 am PST by
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps. Earlier this week, Illinois became the 13th state in the U.S. to offer the feature. Subsequently, we shared a list of additional states that are committed...
android iphone airdrop quickshare

iPhone Users Can Now AirDrop Files to Android Devices

Thursday November 20, 2025 9:47 am PST by
Google today announced a new cross-platform feature that allows for file sharing between iPhone and Android users. With AirDrop on the iPhone and QuickShare on Pixel 10 devices, there is a new file transfer function available. The file sharing option works on Apple devices that include iPhone, iPad, and Mac, along with the Pixel 10, Pixel 10 Pro, Pixel 10 Pro XL, and Pixel 10 Fold....

Top Rated Comments

loveios Avatar
117 months ago
Guys, Apple in iOS 10.2.1 beta 1 fixed the calendar spam issue, and iPhone 6S auto shutdown issue
Score: 4 Votes (Like | Disagree)
BigHonkingDeal Avatar
117 months ago
I just deleted my Beta profile on my iPhone..... It's getting a little tedious to install a new beta every few days.
Score: 3 Votes (Like | Disagree)
benface Avatar
117 months ago
10.2.1, 10.12.3..... It's getting confusing.
Score: 3 Votes (Like | Disagree)
faxe Avatar
117 months ago
Starting with the iOS 10 and Sierra betas, bug reporting has been almost impossible. You can write a detailed report and then hit send, then wait for 20 minutes until it says it was unable to send the report and to try again. You then try again and again until it eventually suceeds or you just give up. When it does succeed, you can watch as new betas come and go and not a single one of your reports have been addressed. Perhaps new bugs appear, but the old ones remain (blatant, obvious ones that make you think Apple employees don't use their own software because how can they possibly not see those bugs). The overall effect is bugs accumulate and each beta is worse than the last.

After this happens for each and every piece of feedback you try to send, you start to question if you should even try to report bugs, until you eventually stop sending reports.
feedback app working fine here for me no problem submitting bug reports.
Score: 3 Votes (Like | Disagree)
Mr. Dee Avatar
117 months ago
Welcome to Internet life. Remember the days, only time you would update your operating system happened only when you bought a new version?
Score: 3 Votes (Like | Disagree)
skillwill Avatar
117 months ago
Is anyone actually noticing an improvement in the final builds since Apple started such a wide and regular public beta testing? I'm certainly not. Makes me think people only download it so they can blog about it or.m show their friends they have it
Score: 3 Votes (Like | Disagree)