1. Remove any programs or stuff that you don't need.
Apps, messages, images, movies, and other files that are no longer in use should be erased since they take up a lot of space on your iPhone. You may begin by scrolling through the Photos app to delete unnecessary photos, or the Texts folder to delete outdated messages and chats. Setting up your Messages app to automatically remove old conversations or attachments after it reaches a specific amount of time or a certain number of restrictions will save you time in the future.
To delete undesirable applications, just press on the app's name and then hit the Delete App option. To delete audio or music files, swipe from right to left on the items you wish to delete, then hit Delete to complete the operation. In addition to removing,
2. Install the most recent iOS version on your iPhone 6s Plus.
Given the numerous issues that a bad update or iOS bug might create, some people may be hesitant to upgrade iOS. This isn't always the case, though. If an iOS update has broken your device, just notify Apple so that they can work on a solution and release a fresh software update with the required improvements. If your iPhone slows down after installing iOS 10.3.3, the iOS 11 upgrade will most likely improve its performance.
3. Restart your iPhone 6s Plus if it hasn't already.
A reboot provides your iPhone a clean new start and is known as one of the easiest remedies to different gadget troubles. A reboot not only fixes minor software issues but also clears your iPhone's memory. Cache files with corrupted contents that may have interfered with your iPhone's regular functioning and operations are also removed. After the reset, thoroughly inspect your iPhone 6s Plus to check whether it has improved in general performance.
