The capabilities and features of the Messages app may be refreshed by restarting the app. Alternatively, you may shut the Messages app by pushing the Home button twice and then swiping up the Messages app preview. After that, you should do a soft reset to refresh your iPhone.
Press and hold the Power button for a few seconds until the Slide to Power off screen displays on your iPhone 6s Plus to conduct a soft reset. To totally turn off your gadget, drag the slider. Press and hold the Power button for 30 seconds, or until the Apple logo displays.
Restart your iPhone 6s Plus by pressing the power button.
Force your iPhone to restart if your text messages or chats are still out of order after you've changed the date and time settings. This forces the shutdown of all operating and crashing programmes and data, giving your device a new start.
A forced restart on your iPhone 6s Plus will not damage any of your saved data and is accomplished by hitting and holding the Power button for around 10 seconds or until the Apple logo displays.
Check your messages once your iPhone has fully booted up to see if the problem has been resolved.
