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 Roundups: iOS 18, iPadOS 18
Related Forums: iOS 18, iPadOS 18

Popular Stories

CarPlay Hero

Apple Releases Wireless CarPlay Fix

Wednesday April 16, 2025 11:28 am PDT by
If you have been experiencing issues with wireless CarPlay in your vehicle lately, it was likely due to a software bug that has now been fixed. Apple released iOS 18.4.1 today, and the update's release notes say it "addresses a rare issue that prevents wireless CarPlay connection in certain vehicles." If wireless CarPlay was acting up for you, updating your iPhone to iOS 18.4.1 should...
AirPods Pro 3 Mock Feature

AirPods Pro 3 Just Months Away – Here's What We Know

Friday April 18, 2025 5:16 am PDT by
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...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday April 17, 2025 4:12 am PDT 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 simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
Beyond iPhone 13 Better Triad

Apple's 20th Anniversary iPhone May Finally Go All Screen

Tuesday April 15, 2025 6:31 am PDT by
Apple is preparing a "bold" new iPhone Pro model for the iPhone's 20th anniversary in 2027, according to Bloomberg's Mark Gurman. As part of what's being described as a "major shake-up," Apple is said to be developing a design that makes more extensive use of glass – and this could point directly to the display itself. Here's the case for Apple releasing a truly all-screen iPhone with no...
maxresdefault

iPhone 17 Pro Launching Later This Year With These 12 New Features

Sunday April 13, 2025 7:52 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Subscribe to the MacRumors YouTube channel for more videos. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and ...
iOS 19 Roundup Feature

iOS 19 Will Add These New Features to Your iPhone

Tuesday April 15, 2025 7:37 am PDT by
The first iOS 19 beta is less than two months away, and there are already a handful of new features that are expected with the update. Apple should release the first iOS 19 beta to developers immediately following the WWDC 2025 keynote, which is scheduled for Monday, June 9. Following beta testing, the update should be released to the general public in September. Below, we recap the key...
tvOS 18 Thumb 1

Apple Releases tvOS 18.4.1

Wednesday April 16, 2025 10:04 am PDT by
Apple today released tvOS 18.4.1, a minor update to the tvOS 18 operating system that came out last September. tvOS 18.4.1 comes two weeks after Apple released tvOS 18.4, and it is available for the Apple TV 4K and Apple TV HD models. tvOS 18.4.1 can be downloaded using the Settings app on the ‌Apple TV‌. Open up Settings and go to System > Software Update to get the new software....
iPhone Security Feature 25

Five iPhone Security Features You Should Be Using

Wednesday April 16, 2025 4:15 pm PDT by
Apple has quite a few security features that it's added to iPhones, iPads, and Macs over the years. Now more than ever, it's important to make sure you're taking advantage of the built-in security tools that are available to keep yourself and your data safe, so we've rounded up a list of the most important options. If you don't already have these enabled, you might want to consider turning...
vision air cable

Images of Apple 'Vision Air' Power Cable Emerge Online

Thursday April 17, 2025 5:55 am PDT by
More images of a redesigned power cable allegedly for a future Apple "Vision Air" headset were today shared online by the prototype collector and leaker known as "Kosutami." Yesterday, the leaker explained that the Apple "Vision Air" will feature a thinner design and switch the battery enclosure and several of its internal structures to titanium to reduce the device's overall weight. Most of ...

Top Rated Comments

Dave-Z Avatar
17 weeks 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
17 weeks ago
Great news, this has made my Christmas!
Score: 15 Votes (Like | Disagree)
JosephAW Avatar
17 weeks ago
Always feel better about a dot one update. :p
Score: 8 Votes (Like | Disagree)
CharlesShaw Avatar
17 weeks 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
16 weeks 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
17 weeks ago
The level of drama in the post about a bugfix update is comical.
Score: 6 Votes (Like | Disagree)