Device Lagging

Hello adnan.bdn,

Thanks for reaching out through the Apple Support Communities about those delays when using your iPhone.

The following article is a great resource, and covers how to check the health of the battery to see if it may be impacting the performance of your iPhone: iPhone Battery and Performance

If everything looks good with your battery after reviewing that article, could you let us know more details about the delays you are experiencing?

Does this happen with all apps, or only with certain ones?

Hopefully that resource and those details will help to further isolate and address this behavior.

Take care.

adnan.bdn,

Do you have any available updates for your apps? How to manually update apps on your Apple device

Does that still persist after following the additional steps from this article? About iOS performance on your iPhone, iPad, or iPod touch

If so, you’ll want to reach out to Apple Support so they can look into this behavior further: Contact Apple Support

Regards.

The iPhone 6 Plus will not support a newer iOS. It is too old and does not have the necessary hardware. The device is out of date.