Apple Admits Intentionally Slowing down Older iPhones, Here’s What You Can Do about It

John Poole (Geekbench developer) has recently mapped out performance for iPhone 7 and iPhone 6s and has come to the conclusion that newer updates from Apple (i.e. 10.2.1, 11.2.0, etc.) throttle the performance of different devices, especially the older iPhones and even iPhone 7 with older batteries. There is a popular thread on Reddit about it and some users have reported that replacing the older batteries with newer ones has restored the CPU clock speeds and performance back to normal.

IMAGE: PetaPixel

Apple responded to this by admitting that they intentionally do this in order to prevent the device from unexpectedly shutting down due to an old battery.

Why Apple Slows down Old iPhones?

1 Protect Devices with Older Batteries

According to Apple, they do this to protect the devices with relatively older batteries. They said that lithium ion batteries cannot handle the processing demands as expected when they age, it results in problems such as the device shutting down unexpectedly. So they release new update that causes the iPhone to slow down and reduce its performance in order to prevent those unexpected shutdowns.


So the reason to slowing down older iPhones is pretty clear. It is directly associated with the flagging battery. As the processor of an iPhone makes a big current draw from such a battery, the battery may deliver the current in spikes which is bad because it can damage the different components of the phone. As a precaution, iPhone unexpectedly shuts down to protect its processor from that damage.

This unexpected shutdown issue became widespread in 2016, which forced the company to come up with an update that included a fix, causing the phone to slow down with somewhat old, low-charged, or cold battery, Apple said.

Other common reasons why old iPhones slow down include (but not limited to) the following:

2 OS Upgrades

New OS upgrades introduce new features and functionalities. And if your device has a relatively older hardware, then it makes sense that it doesn’t have enough resources to handle the extra overhead. As a result, the device feels a bit slower.

3 App Updates

Similar to OS upgrade, some apps also have the same effect on phone’s performance. Apps become bloated with newer updates and the added features require relatively more resources, causing them to eat up more CPU and RAM. Hence, the phone’s performance feels slower.

You can also refer to the following video to lean about why Apple slows down old iPhones:

What to Do If Your iPhone Performs Slower after Updating

As mentioned above, new firmware updates introduce new features that may slow down your device if it has relatively older hardware. Fortunately, there are ways to accelerate the performance of your device and one of them is iMyFone Umate Pro. This ultimate iPhone data eraser tool offers quick and convenient solutions to clean up junk and unnecessary files on your device and boost its performance. iPhone tends to slow down when its storage becomes full as some features and apps on the device require free space to perform optimally. iMyFone Umate Pro is the perfect solution for freeing up space on iPhones.

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  • Clean up junk and temporary files which may slow down your phone.
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How to Speed up Your iPhone

Follow these instructions:

Step 1: Connect your iPhone to your Mac or Windows PC via USB and launch Umate Pro.

qclick quick scan

Step 2: Choose 1-Click Free Up Space tab on the software. Then click on Quick Scan button, it will start scanning your connected iPhone.

quick scan process

Step 3: Once the scan is finished, you will see a list of files that can be cleaned. Click Clean button next to the files you wish to delete and Umate Pro will permanently erase them and free up space on your iPhone.

click clean to release space

Tips to Maximize the Battery Performance of Your iPhone

There are a few things that you can do to increase the performance of your phone’s battery. Some devices and OS have special features dedicated to maximizing the battery performance. However, there are plenty of tips that are universal and will benefit you no matter which phone you own.

  • Update to the latest software.
  • Remove certain cases during charging.
  • Avoid extreme ambient temperatures.
  • Use auto brightness or dim the screen brightness manually.
  • Enable GPS and location services only when required.
  • Keep the screen timeout short.
  • Turn off Wi-Fi and Bluetooth when not in use.
  • Turn off unnecessary notifications.
  • Avoid using vibrate when possible.
  • Take advantage of Power-saving modes.