Apple Releases iOS 12.3.1 With Fixes for Messages and VoLTE Bugs

A week and a half after releasing iOS 12.3 with a revamped TV app, Apple today released iOS 12.3.1, a bug fix update that isn't expected to include any significant new features.

The iOS 12.3.1 update is available on all eligible devices over-the-air in the Settings app. To access the update, go to Settings > General > Software Update. As with all iOS updates, iOS 12.3.1 is free to download, but it may take some time to propagate to all iOS users.

ios 12 3 1 white
According to Apple's release notes, iOS 12.3.1 addresses a handful of bugs related to the Messages app and VoLTE calls.

iOS 12.3.1 includes bug fixes for your iPhone and iPad. This update:

- Fixes an issue that could prevent making or receiving VoLTE calls
- Fixes issues in Messages that could cause messages from unknown senders to appear in your conversation list even though Filter Unknown Senders is enabled
- Fixes an issue that could prevent the Report Junk link from appearing in Messages threads from unknown senders

Apple did not offer a developer or public beta testing period for iOS 12.3.1, as is common for bug fix releases that are intended to address only a very few targeted areas and thus don't require significant feedback from users before public release.

Related Forum: iOS 12

Popular Stories

2024 iPhone Boxes Feature

Apple Adjusts Trade-In Values for iPhones, iPads, Macs, and More

Thursday November 6, 2025 11:12 am PST by
Apple today updated its trade-in values for select iPhone, iPad, Mac, and Apple Watch models. Trade-ins can be completed on Apple's website, or at an Apple Store. The charts below provide an overview of Apple's current and previous trade-in values in the U.S., according to its website. Maximum values for most devices either decreased or saw no change, but the iPad Air received a slight bump. ...
Liquid Glass General Feature

Apple Shares Liquid Glass Design Gallery

Thursday November 6, 2025 2:45 pm PST by
Apple is promoting the new Liquid Glass design in iOS 26, showing off the ways that third-party developers are embracing the aesthetic in their apps. On its developer website, Apple is featuring a visual gallery that demonstrates how "teams of all sizes" are creating Liquid Glass experiences. The gallery features examples of Liquid Glass in apps for iPhone, iPad, Apple Watch, and Mac. Apple...
airtag purple

Apple's Website Lists AirTag 4-Pack at Shockingly Low Price [Updated]

Friday November 7, 2025 6:40 am PST by
Apple's online store in the U.S. is suddenly offering a pack of four AirTags for just $29, which is the same price as a single AirTag. This is likely a pricing error, and it is unclear if orders will be fulfilled. Apple has not discounted the AirTag four-pack in any other countries that we checked. Delivery estimates are already pushing into late November to early December, suggesting...
ikea smart home devices

IKEA Debuts 21 HomeKit-Compatible Smart Bulbs, Sensors, and Controls

Thursday November 6, 2025 4:08 pm PST by
IKEA today announced the upcoming launch of 21 new Matter-compatible smart home products that will be able to interface with HomeKit and the Apple Home app. There are sensors, lights, and control options, all of which will be reasonably priced. Some of the products are new, while some are updates to existing lines that IKEA previously offered. There are a series of new smart bulbs that are...
iOS 26

iOS 26.1 Available Now With These 8 New Features

Monday November 3, 2025 5:54 am PST by
Following more than a month of beta testing, Apple released iOS 26.1 on Monday, November 3. The update includes a handful of new features and changes, including the ability to adjust the look of Liquid Glass and more. Below, we outline iOS 26.1's key new features. Liquid Glass Toggle iOS 26.1 lets you choose your preferred look for Liquid Glass. In the Settings app, under Display...
Early Black Friday Deals 1

The Best Early Black Friday Apple Deals on MacBook, Apple Watch, iPad, and More

Saturday November 8, 2025 6:16 am PST by
We're officially in the month of Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When ...
Apple fitness plus feature

Future of Apple Fitness+ 'Under Review'

Sunday November 9, 2025 5:30 am PST by
The future of Apple Fitness+ is "under review" amid a reorganization of the service, according to Bloomberg's Mark Gurman. In the latest edition of his "Power On" newsletter, Gurman said that Apple Fitness+ remains one of the company's "weakest digital offerings." The service apparently suffers from high churn and little revenue. Nevertheless, Fitness+ has a small, loyal fanbase that...
maxresdefault

In-Depth iPhone Battery Experiment Pits Slow Charging Against Fast Charging

Friday November 7, 2025 1:19 pm PST by
HTX Studio this week shared the results from a six-month battery test that compared how fast charging and slow charging can affect battery life over time. Using six iPhone 12 models, the channel set up a system to drain the batteries from five percent and charge them to 100 percent over and over again. Three were fast charged, and three were slow charged. Another set of iPhones underwent...
apple watch se 3 always on

Apple to Remove iPhone-Apple Watch Wi-Fi Sync in EU With iOS 26.2

Thursday November 6, 2025 4:37 am PST by
Apple in iOS 26.2 will disable automatic Wi-Fi network syncing between iPhone and Apple Watch in the European Union to comply with the bloc's regulations, suggests a new report. Normally, when an iPhone connects to a new Wi-Fi network, it automatically shares the network credentials with the paired Apple Watch. This allows the watch to connect to the same network independently – for...

Top Rated Comments

AMP12345 Avatar
84 months ago
But most importantly, does it fix the adventure sync bug in Pokemon Go that 12.3 introduced? I need those steps counted, gotta catch them all!
Score: 12 Votes (Like | Disagree)
Cosmosent Avatar
84 months ago
It sure would be nice if AAPL would inform App Devs (very specifically) which Bugs they've fixed with each Update, so that we don't have to play the stupid guessing game each time !
Score: 8 Votes (Like | Disagree)
cableguy84 Avatar
84 months ago
This update is insane. Everything is so much faster and I'm getting all day battery life now.
Score: 6 Votes (Like | Disagree)
DaveOP Avatar
84 months ago
Re.: "revamped TV app". I'm still puzzled about what exactly the TV App is for. I see it on my Apple TV 4k, but I've never actually launched it.
It's nice in the US if you actually link all your services to it. I get notifications when teams I care about are in close games, shows I follow (which is not many) have new episodes, etc.
Score: 4 Votes (Like | Disagree)
nutmac Avatar
84 months ago
Re.: "revamped TV app". I'm still puzzled about what exactly the TV App is for. I see it on my Apple TV 4k, but I've never actually launched it.
For me, it's mainly for:

* Watching iTunes or Movies Anywhere (UHD, BD, DVD) purchases
* Watching my own ripped UHDs, BDs, DVDs (those not eligible for Movies Anywhere)
* Apple TV Channels for services that I subscribe to when shows I like becomes available (e.g., HBO for Silicon Valley, Westworld, CBS All Access for Star Trek Discovery) -- being able to download is great for travel
* Up Next for apps that integrate with TV app, such as Amazon Prime Video and Hulu
* Sports for MLB at Bat and ESPN+

iOS 12.3 finally made TV app's player capable by adding 15 second rewind and forward buttons and non obtrusive volume control display.
Score: 4 Votes (Like | Disagree)
axantas Avatar
84 months ago
Re.: "revamped TV app". I'm still puzzled about what exactly the TV App is for. I see it on my Apple TV 4k, but I've never actually launched it.
It is a crappy piece of software with a hilarious interface, usability zero, mainly used to sell Apples movies, formerly known as very useful „Videos“ app
Score: 4 Votes (Like | Disagree)