iPhone 15/16 Lagging? Here is How to Fix Slow Performance Issue on iPhone

Part 1: Why My iPhone 15/16 Keep Lagging?

There can be multiple reasons behind the new iPhone 15/16 lagging. Here are the most common obstacles affecting the performance of your device:

Low Storage Space

The closer your iPhone gets to maxing out its storage space, the slower it becomes. This is because your device requires standard free space to operate with any bumps. Lack of significant storage space can make your iPhone 15/16 laggy.

Outdated Software

The presence of outdated software on your iPhone can make it hard for your device to manage new apps and features effectively. This is another likely answer to your question, “Why is my iPhone 15/16 freezing and lagging?” Thus, it’s integral to frequently update the iPhone 15/16 software for optimal functionality.

Too Many Apps Running in the Background

Heaps of apps running in the background can result in iPhone 15/16 lagging. Your iPhone’s processor allocated power to all the apps, even those open in the background. The greater the number of apps, the harder for the processor to juggle power between them. This eventually leads to the iPhone lagging when typing or performing other tasks.

Old Hardware

The more you use your iPhone 15/16, its hardware will become older, making it hard to manage new apps and features. When this happens, your device will start slowing down or become unresponsive.

Environmental Factors

Extreme temperatures on the higher and lower ends of the scale can cause the iPhone 15/16 to slow down. In such circumstances, your device tries to regulate its temperatures, taking away resources from additional tasks. Thus, keeping your device at moderate temperatures is crucial to prevent performance issues.

Fix 4: Clear iPhone Storage

As suggested earlier, deleting unnecessary storage is an excellent way to ensure your iPhone 15/16 no longer lags.

Here’s how you can do this:

● Go to Settings > General > iPhone Storage. Figure out the items occupying the most space and eliminate the unnecessary ones to free up excess space.

Fix 5: Enable Optimized Battery Charging

iPhone lagging when charging is also a common issue resulting from the device getting overheated while charging. Optimizing your battery charging is an effective way to tackle this problem. Here’s how you can do this:

● Go to Settings > Battery > Battery Health.

Activate the Optimized Battery Charging toggle by tapping on it.

Fix 6: Enable Reduce Motion Settings

Reducing your iPhone’s motion settings, which affect screen transitions, parallax effects of wallpapers, Siri animation, etc., can somewhat solve performance problems.

Here’s how this works:

● Go to Settings > Accessibility > Motion.

● Activate the Reduce Motion option by tapping on the toggle.

Fix 7: Close All the Running Apps

As discussed earlier, when too many apps run in the background, your iPhone can become laggy. Close all apps that are not in use to prevent this.

● Swipe up from the bottom of the screen to open the catalog of apps operating in the background.

● Swipe up on the preview of each App to close them.

Fix 8: Clear Safari History and Data

Safari data can be a prime reason for iPhone 15/16 lagging. This includes cookies, browsing data, history, and other junk files. Here’s how you can delete this data:

● Go to Settings > Safari > Clear History and Website Data.



● Go to Safari > Advanced and activate the JavaScript option by tapping the toggle. This will make a few websites unresponsive, reducing system load.

Fix 9: Turn off Background App Refresh

Apps on your device are automatically refreshed to offer the best experience to users. This often makes your iPhone heat up. Following the steps below, you can turn off this option to ensure smooth functioning.

● Go to Settings > General > Background App Refresh.

● Tap on the toggle to turn it off.

Fix 10: Turn off Auto Updates

The Auto-Update feature is similar to the one mentioned above, wherein the apps on your device are automatically updated, affecting your processor and memory. You can turn off this option with the help of the following steps:

● Go to Settings > Apps and iTunes Stores.

● Deactivate the App Updates option by tapping the toggle.

Fix 11: Wipe Your iPhone

As its name suggests, this method eradicates all the data on your iPhone. However, back up your data before proceeding with this step, or you’ll lose valuable files forever.

Here’s how you can wipe your phone:

● Go to Settings > General > Transfer or Reset iPhone.

● Select Erase All Content & Settings, and all your data will be wiped out.

FAQs about iPhone 15/16 Lagging and Slow Performance Issues?

1. Why is my iPhone 15/16 running slow and freezing?

Low storage space, outdated software, old hardware, lots of apps loading in the background, and extreme temperatures are common reasons for iPhone 15/16 running slow or freezing.

2. Why is iOS 17/18 so laggy?

Downloading new iOS versions on old iPhone models can cause the device to become laggy. Additionally, app compatibility issues, background processes, and depleting storage may cause iOS 17 laggy.

Final Thoughts

What’s the point of investing in the brand-new iPhone 15/16 if you can’t enjoy a seamless user experience? You can effortlessly resolve all iPhone 15/16 lagging issues with the steps listed above.

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