Apple iPhone 4 Uses ‘Evil,’ Tamper-Proof Screws: iFixit

Published: Jan 21, 2011
Updated: Feb 2, 2021
3 minute read
eWeek のコンテンツおよび製品のおすすめは、編集上の独立性を保っています。パートナーへのリンクをクリックすると、当社が報酬を得る場合があります。 詳細を見る

Apple has turned to using hard-to-find, tamper-resistant screws in some iPhone 4 handsets, says iFixit, the repair site know for its teardowns of popular devices. The move, says iFixit, is all part of a “diabolical plan” to prevent iPhone 4 owners from accessing their personal hardware.

In a Jan. 20 post, iFixit blogger Kyle writes that the screws aren’t a standard Torx, or really even a security Torx – Torx screws have six points and a pin in the center. The new screws, officially called “pentalobe,” have no center pin and five rounded lobes, making them look like a child’s drawing of a daisy. (Which is maybe too sweet a description for what Kyle refers to as “an evil ascending.”)

“There isn’t a single reputable supplier that sells exactly the same screwdrivers Apple’s technicians use – which is Apple’s point,” he writes. “They picked an obscure head that no one would have. This new screw defeats even our vaunted 54-bit driver kit, which until now we’ve been able to claim that it’s all you need to disassemble just about any consumer electronics.”

To view images of the upcoming Verizon Wireless iPhone 4, click here.

Many non-U.S. iPhone 4 units have shipped from the factory with the pentalobe screws, and in the United States, when a user brings his or her iPhone 4 in for repair, the device’s more standard screws are said to be matter-of-factly replaced with this tamper-proof variety.

According to iFixit, the pentablobe screws first appeared in the mid-2009 MacBook Pro as a fastener for the battery, and is now also used on the lower case of the 2010 MacBook Air.

Additionally, Apple uses three different sizes of the five-pointed screws. The largest version, called a “Torx Plus Tamper 6” by Apple, was used in the mid-2009 MacBook Pro, though Apple has since switched to using tri-wing screws in the notebook. The current MacBook Air also uses a five-point screw, though one larger than the MacBook Pro.

By contrast, the screws on the iPhone 4 are teeny-tiny – “one of the smallest we’ve ever seen,” writes Kyle. It’s so tiny, he continues, that the “shape looks a little rough, because this tiny screw is giving Apple’s manufacturing process a run for its money.”

Advertisement

In a video on the site, iFixit’s M.J. spells out her frustrations with Apple’s “insistence on baby-proofing our phones.”

“You’re going to need an entirely different driver for these pentalobular screws… [and] these drivers are really rare, and expensive, and usually require proof of Apple certification just to purchase them,” she says. While she appreciates the thoughtful design of her Apple products, she adds, “once I’ve purchased it, it’s mine to do with as I please.”

To that end, iFixi is now selling an “iPhone Liberation Kit.” It includes a driver that can take out the pentalobe screws – not a true pentalobe driver, as it’s more star-shaped than flowery, but one good enough to get the screws out once. “We don’t recommend it for repeated use,” the site explains. “It’s really just a hack to get the screws out and then replace them with standard screws.”

It follows, then, that the kit also includes two replacement Phillips screws and a regular #00 Phillips screwdriver.

Apple chose the new screws because they knew the repair tools would “be both rare and expensive,” writes Kyle. “Shame on them.”

During its 2011 fiscal first quarter, Apple announced Jan. 18, it sold 16.24 million iPhones, which was a record for the company and an increase of 86 percent from the same quarter a year ago.

Michelle Maisto

Michelle Maisto

Content Writer

Michelle Maisto has been covering the enterprise mobility space for a decade, beginning with Knowledge Management, Field Force Automation and eCRM, and most recently as the editor-in-chief of Mobile Enterprise magazine. She earned an MFA in nonfiction writing from Columbia University.

eWeek Logo

eWeek has the latest technology news and analysis, buying guides, and product reviews for IT professionals and technology buyers. The site's focus is on innovative solutions and covering in-depth technical content. eWeek stays on the cutting edge of technology news and IT trends through interviews and expert analysis. Gain insight from top innovators and thought leaders in the fields of IT, business, enterprise software, startups, and more.

TechnologyAdvice が所有・運営しています。 © 2026 TechnologyAdvice. 無断転載を禁じます

広告主に関する開示:このサイトに掲載されている製品の一部は、TechnologyAdvice が報酬を受け取っている企業のものです。この報酬は、製品がこのサイトのどこにどのように表示されるか(表示される順序など)に影響する場合があります。TechnologyAdvice は、市場で入手可能なすべての企業やすべての種類の製品を掲載しているわけではありません。