How to Fix iPhone 6 Plus Lagging? Here's the Solutions.

Posted by Brian Davis on Jun 3, 2020 2:30 PM

fix iphone6 plus lagging

After a long period of usages, your iPhone 6 plus may sometimes become laggy or keep crashing when you use it. That will bring inconvenience for us when we are required to finish our job with the phone quickly or in a limited time. So why this issue will happen? And how to fix a laggy iPhone 6 plus ? This article will give you a detailed analysis and provide you the full guides to repair your phone.

Part 1. Why is My Phone So Slow?
Part 2. How to Fix a Laggy iPhone 6 plus?
Part 3. The Optimal Workaround to Fix iPhone 6 Plus Laggy

Part 1. Why Is My Phone So Slow?

The common reasons why your iPhone becomes slow or keeps lagging will be listed as followed. You can check to see if your phone has the same condition.

1. Memory has been running out

2. Apps glitches on your iPhone

3. iOS system hasn't updated or being damaged

4. Hardware has been damaged

In the next part, I will provide you with specific and effective solutions based on the common reasons mentioned above.

Part 2. How to Fix a Laggy iPhone 6 plus?

To help you fix this problem, I will recommend the top six tips which are commonly used for you.

Tip 1. Remove unnecessary apps/ data

The most effective way to increase your iPhone storage is to remove some unnecessary apps or data that may take up space on your Phone. You can try to search the documents and delete some photos, audio or video files, email, or message on your phone.

To remove the apps, long-press the unwanted apps on the main interface of your phone and then delete them.

To remove unnecessary data, go to 'Settings'> 'General' > 'iPhone Storage' on your phone to delete the data that occupy large storage space.

clear app cache data

Tip 2. Clear Safari cookies and history

You can also clear Safari cookies and history which also takes up many storage space on your phone. Go to 'Settings'> Find 'Safari' > Tap 'Clear History and Website Data'. Then select the 'Clear History and Data' in the popup window.

clear histroy and website data

Tip 3. Close all the apps running in the background

If too many apps run in the background, your iPhone 6 plus will slow down. So you can speed up your phone by removing apps that are running in the background. First, press the home button twice. Then you will see all the apps you have been running. Next, swipe up the apps from the bottom of your phone.

Tip 4. Update your iOS system

If your iOS system hasn't been updated, some problems in the original one cannot be fixed. To update an iOS system, you should go to 'Settings'> 'General'> 'Software Update'> click 'Install Now' to update the iOS system.

update ios system

Tip 5. Reboot your iPhone 6 plus

To reboot your iPhone 6 plus, press and hold both the power button and the home button for about 20 seconds and wait until your screen goes black. Keep holding until your screen comes balck again. Once there is an Apple logo appears you can let go of the button and your iPhone 6 plus will be restart.

reboot iphone 6 plus

Tip 6. Set your phone to factory settings

Before you reset your phone, you should aware that all the data in your phone will be erased after resetting, so you must back up your data first.

To reset your phone to the factory settings, go to 'Settings'> 'General'> Find 'Reset'> Choose 'Erase All Content and Settings'.

set factory setting

Notes: You can back up your iPhone data by iCloud or iTunes.

Part 3. The Optimal Workaround to Fix iPhone 6 Plus Laggy

If your iPhone 6 plus still cannot be fixed after doing the tips above, there is a chance that the iOS system of your phone has been damaged for some unknown reasons, so you need to repair them. Here I provide you the optimal workaround that is to use an iOS repair tool called TunesKit iOS System Recovery software.

Regarded as one of the best iOS recovery software, it can effectively help you solve more than 50 iOS common or serious issues without any data loss. What's more, you don't need to back up and get your device back to normal with easy 3 steps. No matter what issues your iPhone 6 plus appear like stuck in white Apple or iPhone frozen, this professional software can get you out of trouble.

Download Download

Here are the detailed instructions on fixing the problem of the iPhone 6 Plus laggy by using TunesKit.

Step 1.Open TunesKit and Connect Your iPhone to PC

First, you need to open TunesKit on your computer. Then connect your phone with computer via a USB cable. After your phone has been detected by your computer, press 'Start'.

connect ios device

Step 2.Choose a Repairing Mode and Download Firmware Package

To fix the problem that iPhone 6 plus is laggy, choose the Standard Mode first.

select mode

Note: Standard Mode can solve the common iOS issues and repair the iOS system without data loss. And the Advanced Mode can fix more serious issues but it will erase all data on your phone.

Then, confirm your device info is correct and press 'Download'.

download firmware

Step 3. Recover the iOS system

After the firmware package has been downloaded, click the "Repair" button and wait for the recovering process finished.

fix ios

TunesKit is more than an iOS system repair tool, it can also help you downgrade iOS, fix iTunes Error like iTunes error 54, iTunes error 39 , and provide you the function 1-click to enter/ exit recovery mode for free. As TunesKit is very easy to operate, why not download it and have a try?

Download Download

The Bottom Line

This article has provided you 6 useful tips and the optimal workaround. I hope you can fix your issues successfully after reading the steps. If you still have any questions about how to fixing the lagging iPhone, you can leave your voice below.


has covered tech and entertainment for over 10 years. He loves technology in all its forms.

Leave a comment
Home > Fix iPhone Issues > How to Fix iPhone 6 Plus Lagging


Safe & Clean

30 Days

Money Back

24/7 Customer



Free Upgrade