iOS 18.2.1 for iPhone Now Confirmed as iOS 18.3 Beta Testing Continues

Following our report that Apple is internally testing iOS 18.2.1 for the iPhone, an anonymous social media account with a proven track record of sharing iOS-related information has revealed the upcoming software update's build number: 22C161.

Generic iOS 18 Feature Real Mock
With the build number now known, the update is now confirmed.

When the anonymous account shares a build number for an upcoming iOS version, the update is usually released no more than a week later. However, given it is currently the holiday season, it could take longer for the update to be released. We continue to respect the account's request that we not link to their social media posts.

iOS 18.2.1 should be a minor update that fixes bugs and/or addresses security vulnerabilities, but it is unclear which specific issues might be resolved. There are not any critical, widespread bugs that we know about at this particular time, but Apple has obviously identified various bugs and/or security vulnerabilities that it wants to patch ahead of iOS 18.3.

Apple began testing iOS 18.3 with developers and public beta testers earlier this month. That update is likely to be released to all users in January or early February, and only minor changes have been discovered in it so far.

Related Forums: iOS 18, iPadOS 18

Popular Stories

iOS 26

15 New Things Your iPhone Can Do in iOS 26.2

Friday December 5, 2025 9:40 am PST by
Apple is about to release iOS 26.2, the second major point update for iPhones since iOS 26 was rolled out in September, and there are at least 15 notable changes and improvements worth checking out. We've rounded them up below. Apple is expected to roll out iOS 26.2 to compatible devices sometime between December 8 and December 16. When the update drops, you can check Apple's servers for the ...
Intel Inside iPhone Feature

Apple's Return to Intel Rumored to Extend to iPhone

Friday December 5, 2025 10:08 am PST by
Intel is expected to begin supplying some Mac and iPad chips in a few years, and the latest rumor claims the partnership might extend to the iPhone. In a research note with investment firm GF Securities this week, obtained by MacRumors, analyst Jeff Pu said he and his colleagues "now expect" Intel to reach a supply deal with Apple for at least some non-pro iPhone chips starting in 2028....
iPhone 14 Pro Dynamic Island

iPhone 18 Pro Leak Adds New Evidence for Under-Display Face ID

Monday December 8, 2025 4:54 am PST by
Apple is actively testing under-screen Face ID for next year's iPhone 18 Pro models using a special "spliced micro-transparent glass" window built into the display, claims a Chinese leaker. According to "Smart Pikachu," a Weibo account that has previously shared accurate supply-chain details on Chinese Android hardware, Apple is testing the special glass as a way to let the TrueDepth...
iOS 26

Apple Seeds Second iOS 26.2 Release Candidate to Developers and Public Beta Testers

Monday December 8, 2025 10:18 am PST by
Apple today seeded the second release candidate version of iOS 26.2 to developers and public beta testers, with the software coming one week after Apple seeded the first RC. The release candidate represents the final version iOS 26.2 that will be provided to the public if no further bugs are found. Registered developers and public beta testers can download the betas from the Settings app on...
iPhone 17 Pro Cosmic Orange

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

Monday December 1, 2025 2:40 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...
Johny Srouji

Apple's Chipmaking Chief Johny Srouji Responds to Report About Him Potentially Leaving

Monday December 8, 2025 9:23 am PST by
Apple's chipmaking chief Johny Srouji has reportedly indicated that he plans to continue working for the company for the foreseeable future. "I love my team, and I love my job at Apple, and I don't plan on leaving anytime soon," said Srouji, in a memo obtained by Bloomberg's Mark Gurman. Here is Srouji's full memo, as shared by Bloomberg:I know you've been reading all kind of rumors and...
Johny Srouji

Apple Chip Chief Johny Srouji Could Be Next to Go as Exodus Continues

Sunday December 7, 2025 10:41 am PST by
Apple's senior vice president of hardware technologies Johny Srouji could be the next leading executive to leave the company amid an alarming exodus of leading employees, Bloomberg's Mark Gurman reports. Srouji apparently recently told CEO Tim Cook that he is "seriously considering leaving" in the near future. He intends to join another company if he departs. Srouji leads Apple's chip design ...
google pixel 10

Switching Between iPhone and Android Will Get Easier With New Apple and Google Collaboration

Monday December 8, 2025 11:10 am PST by
Apple and Google are teaming up to make it easier for users to switch between iPhone and Android smartphones, according to 9to5Google. There is a new Android Canary build available today that simplifies data transfer between two smartphones, and Apple is going to implement the functionality in an upcoming iOS 26 beta. Apple already has a Move to iOS app for transferring data from an Android...
Apple Fitness Plus expansion hero

Apple Fitness+ Coming to 28 New Regions With Digital Voice Dubbing

Monday December 8, 2025 6:19 am PST by
Apple today announced that Fitness+ is expanding to 28 new markets on December 15 in the service's largest international rollout since launch, accompanied by new language dubbing and a K-Pop music genre. Apple Fitness+ will become available in Chile, Hong Kong, India, the Netherlands, Singapore, Taiwan, and additional regions on December 15, with Japan scheduled to follow early next year....
top stories 2025 12 04a

Top Stories: iOS 26.2 Coming Soon, Apple Execs Depart, and More

Saturday December 6, 2025 6:00 am PST by
You'd expect things to be starting to wind down for the holidays by now, but that doesn't seem to be the case yet in the world of Apple news, with Apple just about ready to release iOS 26.2 and other operating system updates to the public. There was also a flurry of news this week about Apple executive departures, some expected and some not so expected, while we also learned that Apple and...

Top Rated Comments

Dave-Z Avatar
13 months ago

There are not any critical, widespread bugs that we know about at this particular time
?

Yeah, okay. You guys are funny.

So. Many. Bugs.

(And to the pedantic fanboy: Yeah, I get they used the adjective critical. I am pointing out that this year's OS releases (across the board) are adding useless, half-baked "features" instead of actually fixing long-time bugs, newly-introduced bugs, or incorporating features that would legitimately be useful.)
Score: 20 Votes (Like | Disagree)
Fraserh02 Avatar
13 months ago
Great news, this has made my Christmas!
Score: 15 Votes (Like | Disagree)
JosephAW Avatar
13 months ago
Always feel better about a dot one update. :p
Score: 8 Votes (Like | Disagree)
CharlesShaw Avatar
13 months ago

Well, that's a relief. All of us can carry on with our Christmas now.

Have a good time MacRumorians and Mods. ?
And if reports of some nasty vulnerability hit the news during the holiday visit, one can assure Uncle Bob that Apple's already on it, and pass the gravy, please.
Score: 7 Votes (Like | Disagree)
ectospheno Avatar
13 months ago

Not knowing how something works does not qualify as a bug. Not making any effort to troubleshoot does not mean something is a bug. Something you don’t understand but no else is reporting is also not a bug.
People like you are why I rarely post.
Score: 7 Votes (Like | Disagree)
BigDO Avatar
13 months ago
The level of drama in the post about a bugfix update is comical.
Score: 6 Votes (Like | Disagree)