Apple to Fix Telugu Character Bug Causing Devices to Crash in Minor iOS Update - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple to Fix Telugu Character Bug Causing Devices to Crash in Minor iOS Update

Apple has confirmed that a fix for a recently discovered bug that causes apps like Messages to crash on iPhone, iPad, and Mac has been included in iOS 11.3, macOS 10.13.4, watchOS 4.3, and tvOS 11.3, updates that are currently being beta tested ahead of a release this spring.

Furthermore, Apple told iMore's Rene Ritchie that the bug will also be addressed in an upcoming iOS update that will be released in the near future, ahead of iOS 11.3, so customers won't need to wait several weeks for a fix. Minor updates for other operating systems will likely come at the same time.

telugu bug
The bug, induced by sending a specific character in the Indian language Telugu, causes certain apps on iPhones, iPads, and Macs to freeze up and become unresponsive. Messages, Safari, WhatsApp, Facebook Messenger, and other apps that accept text input are all affected.

When the character is sent in an iMessage, for example, it can freeze up the entire Messages app on all of a person's Mac and iOS devices. The Messages app will then refuse to function properly until the offending character is removed by deleting the conversation with the person who sent it.

In some situations, if the character is viewed through an iOS notification, it can cause the entire device to crash, resulting in a re-spring or worse.

Apple users who have received a message with the character will, as mentioned above, need to delete the Messages conversation with the person who sent the character. Alternatively, installing the iOS 11.3 or macOS 10.13.4 betas will fix the problem.

Related Forums: iOS 11, macOS High Sierra

Popular Stories

Apple Event Logo

Apple Working on All-New Operating System

Wednesday July 29, 2026 11:39 am PDT by
Apple is developing an all-new operating system that is essentially a mix of tvOS, watchOS, and iOS, according to Bloomberg's Mark Gurman. In a report this week, he said the operating system will feature a grid of icons, widgets, and apps, along with customizable clock faces. The new software platform is intended for Apple's long-rumored smart home hub. With built-in facial recognition,...
Four iPhone 18 Pro Colors Mock Feature

iPhone 18 Pro and iPhone Ultra: Pre-Orders and Release Date

Thursday July 30, 2026 6:12 am PDT by
Apple has yet to reveal when the iPhone 18 Pro and iPhone Ultra will be announced and released, but the dates usually follow a familiar pattern. Labor Day is September 7 this year. The last time the holiday fell on that day was in 2020, but the iPhone event that year was delayed until October due to the COVID-19 pandemic. So, the last time Labor Day was on September 7 in a normal year was in ...
Dynamic Island iPhone 18 Pro Feature

iPhone 18 Pro: Twelve Changes Coming to Apple's Next Flagship

Thursday July 30, 2026 3:43 am PDT by
We're less than two months out from the launch of Apple's premium next-generation smartphone lineup, and while we're not expecting a dramatic change in terms of functionality, there are still several enhancements rumored to be coming to the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth noting is that Apple is reportedly planning a major change to its iPhone release cycle this year,...

Top Rated Comments

mi7chy Avatar
110 months ago
This seems like a recurring semi-weekly occurrence. Maybe it's time to dump Messages and rewrite it from scratch with safe coding practices.
Score: 14 Votes (Like | Disagree)
110 months ago
So assume a test sequence length of 3: 2,557,582,440,568,875 combinations.
And testing for 3 characters wouldn't have found that specific problem. The crashing character consists of 5 codepoints.

U+0C1C [Lo] TELUGU LETTER JA
U+0C4D [Mn] TELUGU SIGN VIRAMA
U+0C1E [Lo] TELUGU LETTER NYA
U+200C [Cf] ZERO WIDTH NON-JOINER
U+0C3E [Mn] TELUGU VOWEL SIGN AA

If you could test 1,000,000,000,000,000,000 combinations per second testing all possible characters that consist of 5 codepoints would still take 1.5 years.

And testing for characters consisting of 5 codepoint still won't be enough. The family emoji ‍‍‍ for example is actually a sequence of 7 codepoints. Woman + Zero Width Joiner (ZWJ) + Woman + ZWJ + Girl + ZWJ + Boy.

Unicode isn't like in the old times (like ASCII for example), where we had a direct 1:1 mapping between a codepoint and a character to render. Testing all Unicode combinations just won't work.
Score: 6 Votes (Like | Disagree)
110 months ago
So this isn't the first time a unicode problem has caused crashes. What is going on at Apple? After the first time you write a test which walks through every single character and tries to display it. Test fails when it crashes. Run test. Fix all crashes, problems solved. Why haven't they done this? Creating the test is 5 minutes work (admittedly the fixes won't be)
Score: 6 Votes (Like | Disagree)
crushna Avatar
110 months ago
This character/alphabet/word from my mother tongue is very very rarely used in a general conversation. Its is both hard to pronounce and also write . I am very surprised to actually somebody using this particular alphabet and found it to break the code. It must be someone who know the code
Score: 5 Votes (Like | Disagree)
110 months ago
What nose-picker adult living in their mom’s basement discover this bug?
Actually it was discovered by an Italian developer. There have to be at least a couple of million Indians using iOS by now. Why didn’t they scream bloody murder immediately?
[doublepost=1518728203][/doublepost]
This seems like a recurring semi-weekly occurrence. Maybe it's time to dump Messages and rewrite it from scratch with safe coding practices.
Maybe time for you to switch platforms and be happy. But then there’s the serious Skype bug that Microsoft says is too much trouble to fix right now, and all the Android flaws that will never be patched because the carriers don’t care.
Score: 5 Votes (Like | Disagree)
justiny Avatar
110 months ago
What nose-picker adult living in their mom’s basement discover this bug?
Score: 5 Votes (Like | Disagree)

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors