PSA: New Character Bug in Messages Causing iOS Devices to Crash [Updated]

There appears to be a new character-linked bug in Messages, Mail, and other apps that can cause the iPhone, iPad, Mac, and Apple Watch to crash when receiving a specific string of characters.

capturetheflagcrashbug

Image from Twitter

In this particular case, the character string involves the Italian flag emoji along with characters in the Sindhi language, and it appears the system crash happens when an incoming notification is received with the problem-causing characters.

Based on information shared on Reddit, the character string began circulating on Telegram, but has also been found on Twitter.

These kind of device-crashing character bugs surface every so often and sometimes become widespread, leading to a significant number of people ending up with a malfunctioning iPhone, iPad, or Mac. In 2018, for example, a character string in the Telugu language circulated around the internet, crashing thousands of devices before Apple addressed the problem in an iOS update.

There is often no way to prevent these characters from causing crashes and freezes when received from a malicious person, and crashes caused through notifications often cause operating system re-springs and in some cases, a need to restore a device in DFU mode.

MacRumors readers should be aware that such a bug is circulating, and for those who are particularly concerned, as this bug appears to impact notifications, turning off notifications may mitigate the effects. Apple typically fixes these character bugs within a few days to a week.

Update: According to MacRumors reader Adam, who tested the bug on a device running iOS 13.4.5, the issue is fixed in the second beta of that update.

Top Rated Comments

Joniz Avatar
52 months ago

It's amazing how anyone even finds these sort of things to begin with. Are there people literally typing all sorts of crap in messages to see what sticks?
What else you got to do these days?
Score: 12 Votes (Like | Disagree)
ArtOfWarfare Avatar
52 months ago
How hard can it possibly be to just have something like:

try {
renderText();
} catch (Exception e) {
renderUnprintable();
reportToApple(e);
}


I know, that's Java and Apple would actually use Swift, but still, how hard can it possibly be to just not let the exception through?
Score: 10 Votes (Like | Disagree)
Timothy Leo Crowley Avatar
52 months ago

wow, lots of critical bugs coming out of Cupertino lately. Mail security bug and now this.
Bugs like this happen to all complex systems. Always have, always will. Apple finds and fixes them fast.
Score: 10 Votes (Like | Disagree)
globalist Avatar
52 months ago
It's amazing how anyone even finds these sort of things to begin with. Are there people literally typing all sorts of crap in messages to see what sticks?
Score: 9 Votes (Like | Disagree)
riverfreak Avatar
52 months ago
I really wish Apple would treat your contact list as a whitelist and treat everything else as spam, both calls and messages. Heck, I’d even extend that to email, too.
Score: 9 Votes (Like | Disagree)
btrach144 Avatar
52 months ago
wow, lots of critical bugs coming out of Cupertino lately. Mail security bug and now this.
Score: 8 Votes (Like | Disagree)

Popular Stories

iPhone 15 Pro FineWoven

Apple Reportedly Stops Production of FineWoven Accessories

Sunday April 21, 2024 6:03 am PDT by
Apple has stopped production of FineWoven accessories, according to the Apple leaker and prototype collector known as "Kosutami." In a post on X (formerly Twitter), Kosutami explained that Apple has stopped production of FineWoven accessories due to its poor durability. The company may move to another non-leather material for its premium accessories in the future. Kosutami has revealed...
Provenance Emulator

PlayStation and SEGA Emulator for iPhone and Apple TV Coming to App Store [Updated]

Friday April 19, 2024 8:29 am PDT by
The lead developer of the multi-emulator app Provenance has told iMore that his team is working towards releasing the app on the App Store, but he did not provide a timeframe. Provenance is a frontend for many existing emulators, and it would allow iPhone and Apple TV users to emulate games released for a wide variety of classic game consoles, including the original PlayStation, GameCube, Wii,...
iOS 17 All New Features Thumb

iOS 17.5 Will Add These New Features to Your iPhone

Sunday April 21, 2024 3:00 am PDT by
The upcoming iOS 17.5 update for the iPhone includes only a few new user-facing features, but hidden code changes reveal some additional possibilities. Below, we have recapped everything new in the iOS 17.5 and iPadOS 17.5 beta so far. Web Distribution Starting with the second beta of iOS 17.5, eligible developers are able to distribute their iOS apps to iPhone users located in the EU...
apple vision pro orange

Apple Vision Pro Customer Interest Dying Down at Some Retail Stores

Monday April 22, 2024 2:12 am PDT by
Apple Vision Pro, Apple's $3,500 spatial computing device, appears to be following a pattern familiar to the AR/VR headset industry – initial enthusiasm giving way to a significant dip in sustained interest and usage. Since its debut in the U.S. in February 2024, excitement for the Apple Vision Pro has noticeably cooled, according to Bloomberg's Mark Gurman. Writing in his latest Power On...
top stories 20apr2024

Top Stories: Nintendo Emulators on App Store, Two New iOS 17 Features, and More

Saturday April 20, 2024 6:00 am PDT by
It was a big week for retro gaming fans, as iPhone users are starting to reap the rewards of Apple's recent change to allow retro game emulators on the App Store. This week also saw a new iOS 17.5 beta that will support web-based app distribution in the EU, the debut of the first hotels to allow for direct AirPlay streaming to room TVs, a fresh rumor about the impending iPad Air update, and...