How Do You Know If Your IPhone Needs A New Battery Or Is Being Throttled? Here's How - CATEGORY Headline Report: TITLE

Apple is slowing down your older iPhones when their batteries age. That recently confirmed fact has dominated the Apple and tech blogosphere.

But issues like the market implications or whether Apple is justified in throttling older phones, are up for debate and are topics for another time. When it comes to the pure practicality of it, the main thing you probably care about is how this affects you. And if it is, how you can fix it.

Apple, for its part, is offering discounted $29 battery replacements for any iPhone 6 or newer. That’s a great deal to speed up the performance of your phone, but how can you be sure if you really need it? Well, read on.

Check Your iOS Version

Apple’s performance throttling failsafe was introduced in

iOS 10.2.1 for the iPhone 6, 6s and SE.

For the iPhone 7 and 7 Plus, throttling was introduced in

iOS 11.2.

In other words, if you have an iPhone 7 and are running a version of iOS older than iOS 11.2, your iPhone isn’t being throttled. Similarly, if you have an iPhone 6s running a version older than iOS 10.2.1, it’s not being slowed down, either.

Of course, whether or not your iPhone is being slowed down, a new battery might be a good idea — particularly as Apple’s replacement program knocks $50 off the standard price.

Check Your Battery’s Health

The most accurate way to get a read on your phone’s battery health is to contact Apple Support. They can even assess your iPhone’s battery remotely. But, with the high volume of people wanting to do the same, the system is undoubtedly being bogged down. That’s especially true for in-store appointments at Apple Genius Bars.

If you don’t want to go through that hassle, an easy and free alternative is a simple iOS app called Battery Life. Note that you’ll want the app produced by RBT Digital, LLC., which is available here.


The app gives you a great rundown of your battery’s health, as well as other information. Here’s how to interpret its readings.

  1. When you open the app, it’ll give you an overview of your battery wear. The lower the percentage, the better.
  2. You can tap on the

    Menu icon in the upper-left to get additional insights.

  3. Runtime will give you estimated battery life statistics, based on how energy-intensive certain capabilities are, your iPhone’s own specs and your battery’s wear level.

  4. Raw Data gives you insight into how much specific charge your battery currently holds, as well as your battery’s overall capacity relative to its wear level.

  5. In addition, you can get a

    History or

    Chart of your battery life over time. But, if you’ve just downloaded this app, these options won’t be all that helpful for you.

Battery Life is great because it gives you a wear level at a glance.

If your battery has a high wear level, you might want to think about getting it swapped.

Apple recommends a battery replacement when your iPhone’s battery retains about

80 percent of its original capacity (you can view this in the

Raw Data menu).

Of course, you’re free to get your battery replaced regardless of that measure. With batteries being so cheap, you might want to get it swapped even if it’s at 90 percent capacity.

Though, of course, it may not be the most accurate option. Battery life apps can vary in their statistics, and there’s no guarantee that they’ll provide a 100 percent accurate view of your own iPhone’s health — particularly when compared to Apple’s own diagnostics.

Check Your Phone’s Performance

Another option is to figure out whether or not your device’s performance is actually being throttled by iOS. With recent revelations, this is related to your phone’s battery life but is a separate issue.

A good option to check your device performance is Lirum Device Info Lite — a free and simple app that provides information about your iPhone’s performance and statistics about its activity.


Here’s how to find out if your device is being slowed down.

  1. From the app’s home screen, tap the Menu button in the top-left.
  2. Tap

    This Device.

  3. Tap


From here, you’ll want to check the

CPU Actual Clock against the

CPU Maximum Clock. If both numbers are the same, your iPhone isn’t being slowed down. If the first number is lower, then it is.

For reference, here are the clock speeds (basically the speed measure for a particular processor) for various iPhones reported to be affected by Apple’s power management throttling.

  • iPhone 6 and 6 Plus: 1.4GHz

  • iPhone 6s and 6s Plus: 1.84GHz

  • iPhone SE: 1.84GHz

  • iPhone 7 and 7 Plus: 2.34GHz

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Source :

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