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

maxresdefault

Apple Announces 'Let Loose' Event on May 7 Amid Rumors of New iPads

Tuesday April 23, 2024 7:11 am PDT by
Apple has announced it will be holding a special event on Tuesday, May 7 at 7 a.m. Pacific Time (10 a.m. Eastern Time), with a live stream to be available on Apple.com and on YouTube as usual. The event invitation has a tagline of "Let Loose" and shows an artistic render of an Apple Pencil, suggesting that iPads will be a focus of the event. Subscribe to the MacRumors YouTube channel for more ...
Apple Silicon AI Optimized Feature Siri

Apple Releases Open Source AI Models That Run On-Device

Wednesday April 24, 2024 3:39 pm PDT by
Apple today released several open source large language models (LLMs) that are designed to run on-device rather than through cloud servers. Called OpenELM (Open-source Efficient Language Models), the LLMs are available on the Hugging Face Hub, a community for sharing AI code. As outlined in a white paper [PDF], there are eight total OpenELM models, four of which were pre-trained using the...
Apple Vision Pro Dual Loop Band Orange Feature 2

Apple Cuts Vision Pro Shipments as Demand Falls 'Sharply Beyond Expectations'

Tuesday April 23, 2024 9:44 am PDT by
Apple has dropped the number of Vision Pro units that it plans to ship in 2024, going from an expected 700 to 800k units to just 400k to 450k units, according to Apple analyst Ming-Chi Kuo. Orders have been scaled back before the Vision Pro has launched in markets outside of the United States, which Kuo says is a sign that demand in the U.S. has "fallen sharply beyond expectations." As a...
iPad And Calculator App Feature

Apple Finally Plans to Release a Calculator App for iPad Later This Year

Tuesday April 23, 2024 9:08 am PDT by
Apple is finally planning a Calculator app for the iPad, over 14 years after launching the device, according to a source familiar with the matter. iPadOS 18 will include a built-in Calculator app for all iPad models that are compatible with the software update, which is expected to be unveiled during the opening keynote of Apple's annual developers conference WWDC on June 10. AppleInsider...
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...