Arizona Attorney General Leading Multi-State Probe on Apple iPhone Throttling

Apple is facing another probe on its iPhone "throttling" practices, this time from Arizona attorney general Mark Brnovich, reports Reuters.

iphone 6s battery
The probe, which may also involve Texas, has been ongoing since October 2018 and is attempting to determine whether Apple's deliberate slowing of older iPhones "violated deceptive trade practice laws."

Last week, reports suggested that Texas was involved in an investigation aiming to determine whether Apple deceived customers, though no other information was available at the time. It's likely that the probe in Arizona is linked to the Texas report, with both states looking into Apple's 2017 ‌iPhone‌ slowdown practices.

As many MacRumors readers know, Apple in iOS 10.2.1 (which was released in early 2017) introduced a performance management system designed to eliminate unexpected shutdowns by throttling the maximum performance of iPhones with chemically aged batteries.

Apple did not disclose how its power management system worked, leading to customer outrage when it was discovered ‌iPhone‌ performance was being downgraded. Apple said that this was to make sure that the ‌iPhone‌ lasted as long as possible, even as the battery failed.

After it was discovered that Apple was limiting ‌iPhone‌ performance, Apple apologized and ultimately launched a battery replacement program that saw the company offering replacement batteries for older devices for $29. Replacing a failing battery successfully resolves the problem that leads to shutdowns, which is why power was limited by Apple in the first place.

In addition to offering low-cost battery replacements for a year, Apple has also agreed to pay up to $500 million to settle a class action lawsuit over the issue.

Apple's performance management system is now disabled by default and it turns on only if an ‌iPhone‌ suffers an unexpected shutdown. Even then, it can be disabled, and Apple also provides much more detailed information on battery health so customers can opt for a replacement when necessary.

Popular Stories

m1 chip slide

Five Years of Apple Silicon: M1 to M5 Performance Comparison

Monday November 10, 2025 1:08 pm PST by
Today marks the fifth anniversary of the Apple silicon chip that replaced Intel chips in Apple's Mac lineup. The first Apple silicon chip, the M1, was unveiled on November 10, 2020. The M1 debuted in the MacBook Air, Mac mini, and 13-inch MacBook Pro. The M1 chip was impressive when it launched, featuring the "world's fastest CPU core" and industry-leading performance per watt, and it's only ...
All Screen iPhone 2027 Feature 1

Apple to Hide Selfie Camera Under Display of 20th Anniversary iPhone

Monday November 10, 2025 1:55 am PST by
Apple will conceal the front-facing camera under the screen of its 2027 iPhone, a Chinese leaker said today, corroborating reports that Apple's 20th anniversary iPhone will have no visible cutouts in the display. Weibo-based account Digital Chat Station said Apple's development of under-screen camera technology was progressing as planned for adoption in 2027, one year after it will...
iphone air thinness

iPhone Air Sales Are So Bad That Apple's Delaying the Next-Generation Version

Monday November 10, 2025 11:41 am PST by
The thin, light iPhone Air sold so poorly that Apple has decided to delay the launch of the next-generation iPhone Air that was scheduled to come out alongside the iPhone 18 Pro, reports The Information. Apple initially planned to release a new iPhone Air in fall 2026, but now that's not going to happen. Since the iPhone Air launched in September, there have been reports of poor sales...
iphone pocket%402x

Apple Debuts iPhone Pocket, a Limited Edition iPod Sock-Style Accessory

Tuesday November 11, 2025 1:23 am PST by
Apple has teamed up with Japanese fashion house ISSEY MIYAKE to launch iPhone Pocket, a 3D-knitted limited edition accessory designed to carry an iPhone, AirPods, and other everyday items. The accessory is like a stretchy pocket, not unlike an iPod Sock, but elongated to form a strap made of a ribbed, elastic textile that fully encloses an iPhone yet allows you to glimpse the display...
Early Black Friday Deals 1

The Best Early Black Friday Apple Deals on AirPods, Apple Watch, iPad, and More

Saturday November 8, 2025 6:16 am PST by
We're officially in the month of 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 fitness plus feature

Future of Apple Fitness+ 'Under Review'

Sunday November 9, 2025 5:30 am PST by
The future of Apple Fitness+ is "under review" amid a reorganization of the service, according to Bloomberg's Mark Gurman. In the latest edition of his "Power On" newsletter, Gurman said that Apple Fitness+ remains one of the company's "weakest digital offerings." The service apparently suffers from high churn and little revenue. Nevertheless, Fitness+ has a small, loyal fanbase that...
homepod mini colors

New HomePod Mini Coming Soon With These Features

Tuesday November 11, 2025 7:30 am PST by
Apple is expected to announce a new HomePod mini imminently, headlining with new chips. Here are all of the new features we're expecting. The second-generation HomePod mini is highly likely to contain a more up-to-date chip for more advanced computational audio and improved responsiveness. The current HomePod mini is equipped with the Apple Watch Series 5's S5 chip from 2019. Apple is likely ...
iOS 26

iOS 26.2 Available Next Month With These 8 New Features

Tuesday November 11, 2025 9:48 am PST by
Apple released the first iOS 26.2 beta last week. 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 in 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....
2024 iPhone Boxes Feature

Apple Adjusts Trade-In Values for iPhones, iPads, Macs, and More

Thursday November 6, 2025 11:12 am PST by
Apple today updated its trade-in values for select iPhone, iPad, Mac, and Apple Watch models. Trade-ins can be completed on Apple's website, or at an Apple Store. The charts below provide an overview of Apple's current and previous trade-in values in the U.S., according to its website. Maximum values for most devices either decreased or saw no change, but the iPad Air received a slight bump. ...
iphone black friday gold

The Best Early Black Friday iPhone Deals

Monday November 10, 2025 10:18 am PST by
Cellular carriers have always offered big savings on the newest iPhone models during the holidays, and Black Friday 2025 sales have kicked off at AT&T, Verizon, T-Mobile, and more. Right now we're tracking notable offers on the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air. For even more savings, keep an eye on older models during the holiday shopping season. Note: MacRumors is...

Top Rated Comments

macbookfan Avatar
69 months ago
Consumer: My old phone shuts off randomly when I’m using it.
Apple: here have a free software update that keeps your phone on.
Consumer: Apple slowed down my phone!

No matter what someone is always not happy.
Score: 16 Votes (Like | Disagree)
2010mini Avatar
69 months ago

Do you accept apples apology?
for fixing a problem of iPhones shutting down during use? The only thing they did wrong was not shout it from the hills. All this info was in the description of the iOS update.
Score: 13 Votes (Like | Disagree)
BigMcGuire Avatar
69 months ago
This just wasn't aged batteries. I tell my experience every time these threads come up:


My wife and I have the same phones, we buy them at the same time - the same phones, and use them for a few years then upgrade.

Our 6s+ phones started out identical... and less than 3 months into ownership, my wife's 6s+ would last significantly less than my 6s+ with near identical usage (walking in the park doing Ingress). It was about 4-5 months in that her phone started shutting off during high usage events (such as Ingress, Facebook, etc).

6 months into ownership her phone would restart handfuls of times on a mile walk in the park. All the while her battery life was 3x worse. CoconutBattery would show capacity at 40%, 60%, 80%, randomly depending on when I'd measure.

We took it to the Apple Store only for her phone to repeatedly fail the diagnostic test but the tech, frustrated, threw up his hands and said: "Sorry, I can't help you, her battery is green."

So we paid, out of pocket, for the $80 battery replacement which solved all her problems.

Granted, Apple refunded $55 of that... but ... there were CLEARLY a batch of bad batteries that went out and Apple tried to mitigate it by lowering CPU voltage to help reduce rebooting.
Score: 12 Votes (Like | Disagree)
lkalliance Avatar
69 months ago

for fixing a problem of iPhones shutting down during use? The only thing they did wrong was not shout it from the hills. All this info was in the description of the iOS update.
Anecdotally, that's not the only thing it did wrong. SUPPOSEDLY many people would go into an Apple Store complaining of a slowing phone and were directed by Apple staff that the way to fix that was to get a new phone. Anecdotal evidence is problematic. Is that what was really recommended? Did the sales staff perhaps mention a battery replacement but the buyer shrugged it off? We don't know. Just that anecdotally, Apple not only didn't mention the feature but used its invisibility to turn people to the more expensive(/profitable) fix.

For what it's worth.


ADDED: It's also quite possible that the Apple Store clerks were also not aware of the feature (it was hidden, after all), and so directing users to consider a new phone would be the appropriate thing to suggest...which doesn't remove the issue at all, just kicks it further up the chain of command.
Score: 9 Votes (Like | Disagree)
kiranmk2 Avatar
69 months ago
Apple definitely hid this - if it was accurately described in the update notes then tech sites would have featured it at the time and listed a battery replacement as a way to maintain speed. The fact that the tech sites were as surprised as anyone when the story broke tells a big story.

I don't think Apple did anything wrong by doing change, but they did do wrong by not telling people this was how iOS worked - as mentioned above, lots of people probably upgraded to new phones completely unaware that a $79 option would make their device speedy again.
Score: 9 Votes (Like | Disagree)
luvbug Avatar
69 months ago
More politicians looking for publicity, nothing more. That's all that seems to matter anymore.
Score: 8 Votes (Like | Disagree)