iOS Bug Causes Specific Network Name to Disable Wi-Fi on iPhones
A wireless network naming bug has been discovered in iOS that effectively disables an iPhone's ability to connect to Wi-Fi.
Security researcher Carl Schou found that after joining a Wi-Fi network with the name "%p%s%s%s%s%n" his iPhone's Wi-Fi functionality was left "permanently disabled."
Changing a hotspot's SSID did nothing to correct the problem, with even a reboot failing to make a difference, according to BleepingComputer.
Other users who were able to replicate the issue have suggested the bug could be related to the initial use in the network name of the percentage sign, which leads to an input parsing issue whereby iOS mistakenly interprets the letters following the "%" as a string-format specifier.
In C and C-style languages, string format specifiers have a special meaning and are parsed by the language compiler as a variable name or a command instead of standard text.
Android phones don't seem to be affected by the same network, but iPhones hit by the problem need to have their network settings reset before a Wi-Fi hotspot can be connected again.
To perform the reset, open the Settings app, tap General -> Reset, then tap Reset Network Settings and confirm the request at the prompt.
Popular Stories
Apple has begun selling the Hikawa Phone Grip and Stand, a new limited-edition iPhone accessory designed with accessibility in mind.
Designed by LA-based Bailey Hikawa to celebrate the 40th anniversary of accessibility at Apple, the grip uses magnets to securely snap onto any iPhone with MagSafe.
Apple says it can be removed with ease, and doubles as a stand with two different viewing...
iOS 26.2 is currently in beta testing. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics for Apple Music, and more.
In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date.
Keep reading...
Apple's annual four-day Black Friday through Cyber Monday shopping event is returning on Friday, November 28 through Monday, December 1 in many countries, including the United States, Canada, Australia, New Zealand, France, Germany, Italy, Spain, the United Kingdom, Belgium, the Netherlands, Sweden, Thailand, and others.
During the shopping event, customers can get an Apple gift card with...
iOS 27 will reportedly have two major elements: quality improvements and new AI features.
In his Power On newsletter today, Bloomberg's Mark Gurman said that iOS 27 will be similar to Mac OS X Snow Leopard, in the sense that Apple is focused on improving "quality and underlying performance" over adding new features.
Gurman said there is one exception to this rule, though, as he expects...
On this week's episode of The MacRumors Show, we talk through all of the new features and improvements expected to come to next year's iPhone 18 Pro and iPhone 18 Pro Max models.
Subscribe to The MacRumors Show YouTube channel for more videos
Apple's next-generation iPhones are less than ten months away and we already have a good idea about what to expect based on corroborated leaks, rumors,...
We're only a few days away from 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's first foldable iPhone is expected to launch alongside the iPhone 18 Pro models in fall 2026, and it's shaping up to include two standout features that could set it apart from the competition.
The book-style foldable will reportedly feature an industry-first 24-megapixel under-display camera built into the inner display, according to a recent JP Morgan equity research report. That...
We've been focusing on deals on physical products over the past few weeks, but Black Friday is also a great time of year to purchase a streaming membership. Some of the biggest services have great discounts for new and select returning members this week, including Disney+, Hulu, Paramount+, Peacock, and more.
Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
Black Friday is just over a week away, and iPad deals have finally started to flood in at retailers like Amazon and Best Buy. Below we're tracking discounts on every current generation iPad, including lowest-ever prices on M3 iPad Air and M5 iPad Pro, plus steep markdowns on iPad and iPad mini.
Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a ...
