How to Disable Apple's Performance Management Features in Older iPhones in the iOS 11.3 Beta

by

Starting with the second beta of iOS 11.3, Apple has introduced a new "Battery Health" feature that's designed to provide you with more information about the state of your battery and whether or not it's impacting device performance.


If your iPhone has a degraded battery that is leading to throttling issues, the "Battery Health" section will let you know about it, and it will provide an option to turn off performance management to put a stop to any throttling that's going on.

There are, however, some nuances to this feature that you need to know about, which we'll outline below.

When Installing iOS 11.3

When you first install the iOS 11.3 update, all performance management features that might have been enabled are automatically disabled. So when you first install the beta, you don't need to do anything because performance management is turned off.

You will, however, need to watch out for an unexpected shutdown that turns your device off, because if this happens and you have a bad battery, performance management will be turned back on. More on this below.

Accessing Battery Health

You can check out the status of your battery in the new Battery Health section, which will tell you the maximum capacity of the battery in your iPhone and whether or not it's running at peak performance capacity. Here's how to get to it:

  1. Open up the Settings app.
  2. Scroll down to "Battery" and tap it.
  3. Tap on "Battery Health."

All the info you need to know about your battery is listed here. Maximum Capacity will let you know how your battery is performing overall, and it directly correlates to how long your iPhone will last on a single charge.

Peak Performance Capability will let you know if a degraded battery has resulted in performance slowdowns.

What it Looks Like When Your Device Running Normally

When your iPhone is running as normal, under the "Peak Performance Capability" section, it will say "Your battery is currently supporting normal peak performance."


You may still have somewhat degraded Maximum Battery capacity as this number slowly declines after charging cycles, but throttling does not kick in until the battery becomes severely degraded and can no longer offer enough power to support spikes in processor usage.

What it Looks Like if You Have a Bad Battery

If you have a bad battery, it will say "Your battery's health is significantly degraded," and it will let you know that an Apple Authorized Service Provider can replace the battery to restore full performance.


It will also tell you if performance management features have been turned on, and it will provide an option to turn them off.

What Happens When You Have an Unexpected Shutdown

As mentioned above, all performance management features are disabled automatically upon installing iOS 11.3. If your device has a bad battery and it shuts down because of it, performance management will be automatically enabled.

If this happens, you will see the following message under "Peak Performance Capability" in Battery Health.

"This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. Performance management has been applied to prevent this from happening again."


If you have an unexpected shutdown AND your battery capacity is significantly degraded, you'll see a slightly different message suggesting an immediate battery replacement.

How to Disable Performance Management if Your Battery is Bad

After experiencing an unexpected shutdown, performance management is turned on automatically on your iPhone. You will, however, see a small "Disable" option when this happens, and if you tap it, you'll be given the option to disable performance management.


Disabling performance management will turn off any throttling that's been applied, but it will leave your device vulnerable to future unexpected shutdowns.

You will not see the option to disable performance management until your device has experienced at least one unexpected shutdown, and once you disable it, there is no option to turn it on again.


If your iPhone shuts down again while performance management is disabled, though, performance management will automatically turn it on again.

This means you will need to turn performance management off again each time your device experiences an unexpected shutdown, as Apple believes slower performance is preferable to sudden losses of power.

How to Permanently Disable Performance Management

If you have a device with a bad battery that is experiencing unexpected shutdowns and is subjected to Apple's performance management feature, the only permanent solution is to get a new battery.

Having your battery replaced will restore an older iPhone to full working order, with maximum capacity and performance capabilities.

Apple is offering $29 battery replacements for the iPhone 6 and newer through the end of 2018. Your battery does not need to be experiencing shutdowns to be replaced - you can also get a replacement for a battery that's not operating at maximum capacity, no questions asked. You can get one $29 battery replacement per device.

Newer devices like the iPhone 8, iPhone 8 Plus, and iPhone X that have a high maximum capacity near 100% don't need replacement, but at levels below 90%, it could be worth getting a new battery while Apple is still offering them at a discounted price. To get a battery replacement, contact Apple Support.

If you have AppleCare+ or are under your one-year device warranty and have a battery that's below 80 percent, you won't even need to pay the $29 fee -- that's considered a defective battery and Apple will replace it for free.

Devices Impacted by Performance Management

Performance management features have been installed on the iPhone 6, 6 Plus, 6s Plus, 7, 7 Plus, and SE. On other iPhones, like the iPhone 8, 8 Plus, and X, you will be able to see readings for Maximum Capacity and Peak Performance Capability, but you won't need to worry about throttling or unexpected shutdowns.

Top Rated Comments

(View all)
Avatar
30 months ago
For some reason, I just can't get past that this is all a bunch of BS.
Score: 11 Votes (Like | Disagree)
Avatar
30 months ago
Apple is still doing it wrong. Unexpected shutdown is caused by defective hardwares but Apple is trying to cover it up with a software patch. Replace them all free, Apple. It’s a design defect.
Score: 10 Votes (Like | Disagree)
Avatar
30 months ago

For some reason, I just can't get past that this is all a bunch of BS.

Are you a battery chemist?
[doublepost=1517955873][/doublepost]

Your phone is fine. The OS power management "feature" is not.

Next steps?

1. Implement user accessible fix
2. Manufacture more unexpected shut downs.
3. Require user to reset switch manually every time.
4. Sell more phones.

I'm no less cynical about this issue after seeing the work around.

Huh. Who would have thought that batteries wear out? Yeah it’s some Apple conspiracy to sell more phones because they are on the ropes financially, right? Come on.
Score: 10 Votes (Like | Disagree)
Avatar
30 months ago
“...but throttling does not kick in until the battery becomes severely degraded”

Maybe I’ve just got a bad phone, but my battery health is 88%(info from Apple) and my iPhone 6s is throttled very often... To me, 88% shouldn’t warrant the kind of throttling that they are doing. It’s especially not “severely degraded.”

I get the optimal experience argument with the shut off issue, but it seems like the throttling is more prominent than they say it is and sugar coating their power issues is just letting them get away with it.
Score: 10 Votes (Like | Disagree)
Avatar
30 months ago

“...but throttling does not kick in until the battery becomes severely degraded”

Maybe I’ve just got a bad phone, but my battery health is 88%(info from Apple) and my iPhone 6s is throttled very often... To me, 88% shouldn’t warrant the kind of throttling that they are doing. It’s especially not “severely degraded.”

It depends what you class as “throttled” when your battery performance is fine. No iPhone CPU, or mobile CPU for that matter, would run at the maximum frequency at all times when it’s not necessary, otherwise you’ll be burning through your battery in no time.

The OS will always have some features to maximise battery life if it’s on standby or not running intensive apps. Similarly, if you’re experiencing performance issues such as UI lag on a newer OS then this may not necessarily be remedied by higher CPU clockspeed: the bottleneck could be RAM, graphics, or simply the age of the hardware on a more resource-intensive OS.

Don’t take this as an apologist remark. It’s just a gentle reminder that clockspeed below the max frequency when using your phone doesn’t immediately mean it’s throttled. Think the max quoted frequency as Intel’s “turbo boost”. It’ll rarely hit that with normal usage.
Score: 6 Votes (Like | Disagree)
Avatar
30 months ago
seems pretty comprehensive - looks like Apple got all the situations you would want to know about your battery.
Score: 5 Votes (Like | Disagree)

Top Stories

Apple Releases macOS Catalina 10.15.5 With Battery Health Management Features, Fix for Finder Freezing

Tuesday May 26, 2020 1:59 pm PDT by
Apple today released macOS Catalina 10.15.5, the fifth update to the macOS Catalina operating system that was released in October 2019. macOS Catalina 10.15.5 comes two months after the launch of macOS Catalina 10.15.4, which introduced Screen Time Communication Limits. macOS Catalina 10.15.5 is a free update that can be downloaded from the Mac App Store using the Update feature in the...

Leaker Shares Details on 'iPhone 13' Camera [Updated]

Wednesday May 27, 2020 4:27 pm PDT by
The next-generation iPhone 12 lineup coming in fall 2020 isn't out yet, but Fudge (@choco_bit), a leaker who sometimes shares information on upcoming Apple devices, today offered up details on what Apple has in store for the 2021 iPhone 13's camera setup. A simple design drawing depicts a device with a four camera array, which Fudge claims will have the following features: 64-megapixel...

Leaker: Apple to Stick With Lightning Over USB-C for 'iPhone 12' Before Going Port-Less Next Year

Tuesday May 26, 2020 2:31 am PDT by
Apple will use a Lightning port instead of USB-C in the upcoming "iPhone 12," but it will be the last major series of Apple's flagship phones to do so, with models set to combine wireless charging and a port-less Smart Connector system for data transfer and syncing in the iPhone "13 series" next year. The above claim comes from occasional Apple leaker and Twitter user "Fudge" (@choco_bit),...

16-Inch MacBook Pro, iPad Pro, and iMac Pro With Mini-LED Displays Again Rumored to Launch in 2021

Tuesday May 26, 2020 5:30 am PDT by
Apple plans to release several higher-end devices with Mini-LED displays in 2021, including a new 12.9-inch iPad Pro in the first quarter, a new 16-inch MacBook Pro in the second quarter, and a new 27-inch iMac in the second half of the year, according to Jeff Pu, an analyst at Chinese research firm GF Securities. This timeframe lines up with one shared by analyst Ming-Chi Kuo, who recently...

Apple Begins Selling Refurbished iPhone XR Models

Thursday May 28, 2020 9:50 pm PDT by
Apple today began selling certified refurbished iPhone XR models in select colors and capacities for the first time in the United States. Refurbished iPhone XR models are priced at a roughly 16 percent discount compared to current pricing on brand-new units, knocking $100–120 off of the regular price. In addition to the 64GB and 128GB capacities matching current brand-new iPhone XR models, ...

Apple Making It Harder to Avoid Nagging macOS Update Notifications

Thursday May 28, 2020 8:13 am PDT by
With the release of macOS Catalina 10.15.5 and related security updates for macOS Mojave and High Sierra earlier this week, Apple is making it more difficult for users to ignore available software updates and remain on their current operating system versions. Included in the release notes for macOS Catalina 10.15.5 is the following:- Major new releases of macOS are no longer hidden when...

HBO Max Now Available on Apple TV and iOS Devices

Wednesday May 27, 2020 2:42 am PDT by
HBO Max launched today, and is now available on Apple TV, iPhone, and iPad. WarnerMedia's new streaming service, which replaces HBO Now, combines HBO content with shows and films from Warner Bros and Turner TV. The service is available as a native app on the ‌Apple TV‌ HD and ‌Apple TV‌ 4K, but second and third-generation ‌Apple TV‌ owners will need to AirPlay HBO Max content...

Powerbeats Pro Debut in Four New Colors: Spring Yellow, Cloud Pink, Lava Red, and Glacier Blue

Friday May 29, 2020 10:00 am PDT by
Following a couple of leaks in recent weeks, Beats today is officially announcing four new colors for its Powerbeats Pro wireless earphones: Spring Yellow, Cloud Pink, Lava Red, and Glacier Blue. The new earphones will go on sale June 9 and sell for the same $249.95 price as the existing color options. Aside from the colors, the new Powerbeats Pro models are otherwise identical to the...

Anker Launches $100 24K Gold-Plated USB-C to Lightning Cable

Wednesday May 27, 2020 12:47 pm PDT by
Anker, a brand normally known for its well-made, affordable accessories for Apple devices, has debuted a new $100 24K gold-plated USB-C to Lightning cable. According to Anker, the cable, which is in the PowerLine+ III family, features a "Special Edition Gold Design" that's "bold yet elegant" with the aforementioned gold-plated cable heads and matching braided gold and black cable. The...

More Photos and Video of Apple's Redesigned Leather Loop Watch Band Surface

Thursday May 28, 2020 10:50 am PDT by
Images of a new version of the Leather Loop that Apple appears to have in development surfaced yesterday, and today, Vietnamese site Tinhte.vn has shared additional photos and videos that give us a clearer picture of what to expect from the new band. The bands come in colors that include red, hot pink, blue, black, and brown, with some of the bands featuring different colored accents at the...