How to Fix iPhone Laggy after Update: 4 Top Solutions

Why is my iPhone lagging all of a sudden?

If your iPhone is suddenly lagging, there could be several reasons behind it. 

❌ Recent update: If you've recently updated your iPhone's iOS, there could be bugs or glitches affecting performance. 

❌ Background processes: Too many apps running in the background can slow down your iPhone. 

❌ Software glitches: A temporary glitch might be causing the lag. Restarting your iPhone can often solve this.

❌ Low storage space: If your iPhone's storage is almost full, it can slow down performance. 

❌ Cached data: Over time, cached data from apps can accumulate and slow down your device. 

How to fix iPhone laggy after update

When you encounter the issue, you can use the solutions below to fix it.

Solution 1. Restart your iPhone

At first, you can choose the appropriate method to restart your iPhone based on the model you're using. This way may solve the problem effectively.

For iPhone X or later: Press and hold either volume button and the side button simultaneously until the power-off slider appears > Drag the power-off slider to the right to turn off your device.

For iPhone 6/7/8 or SE(2nd or 3rd generation): Press and hold the side button until the power-off slider appears on the screen > Drag the slider to the right to power off your iPhone.

For iPhone SE (1st generation), 5, or earlier: Press and hold the top button > When the power-off slider appears, drag the slider to turn off the device.

After that, press and hold the side/top button until you see the Apple logo to turn on your iPhone.

Solution 2. Clear iPhone storage

Managing your iPhone’s storage space can often help resolve lag issues. For instance, freeing up storage by deleting message attachments can be effective. Start by removing unnecessary or outdated images, videos, unused apps, and other bloatware from your device. After doing this, you should notice an improvement in your iPhone’s speed.

To delete file attachments, follow the steps:

Go to Settings > General > iPhone Storage > Scroll down and tap on Messages > You’ll see categories like Top Conversations, Photos, GIFs and Stickers, and Other > Tap Edit in the upper-right corner > Select the attachments you want to delete.

Or you can use the professional iPhone eraser - FoneTool to help you delete iPhone data efficiently.

With this handy tool, you can have a completely different and enjoyable experience.

 Delete documents and data on iPhone in one click, like photos, videos, music, messages, etc.
Deep erase technology ensures all your deleted data can not be recovered anymore. 
 You can selectively or fully back up your iPhone data to PC before the erasing.
 FoneTool works well with various iOS devices and iOS versions, even the latest ones.

Now you can download it on your Windows PC and learn how to delete data on iPhone to fix the issue.

 Note: This way will erase all the data you have selected, so if you need to erase photos, videos or other data, it’s better to selectively back up the important files with FoneTool. (Phone Transfer > iPhone to PC.)

Step 1. Launch FoneTool on your PC > Connect your iPhone to the computer with the USB cable > If asks, tap Trust on your iPhone.

Step 2. Go to Toolbox > choose Data Eraser.

Step 3. Click Erase private data > Choose Get Started.

Step 4. Tap each icon that needs to be erased and check Enable Deep Erase Technology if you want them unrecoverable, then click Start Erase.

Solution 3. Disable the Background App Refresh feature

If you'd like to explore another method to solve your iPhone's lagging issue, consider disabling background app refresh.

This action can help minimize resource usage on your device, leading to improved performance and stability.

Step 1: Navigate to Settings > General > Background App Refresh.

Step 2: Select Background App Refresh and tap Off to disable it entirely.

Solution 4. Factory reset iPhone

If your device continues to lag after trying the previous steps, you might want to reset iPhone to factory settings. This should be a last resort, as a factory reset will permanently delete all data on your device.

I strongly recommend backing up all important information before proceeding with the reset to ensure you don’t lose anything vital.

To perform the factory reset, go to Settings > General > Transfer or Reset iPhone. Then, follow the remaining instructions to complete the reset.

Conclusion

Now you can know how to fix the issue when you find your iPhone laggy after update. You can restart your iPhone, clear iPhone storage, disable the Background App Refresh feature or factory reset iPhone to make it.

To speed up the process, you can use FoneTool to help your delete iPhone storage or factory reset iPhone in one click.

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