Carrier settings on iphone 6?

So my phone told me that there are new carrier settings available but the prompt to update my phone isn't coming up. Also i don't know if this is related to carrier settings at all but i can't use imessage when texting another iphone 6 user.

Go to the About section in Settings. Usually that would show any update prompt for carrier settings.

Firstly, make confirm that your iPhone or iPad connected with internet, which device that you want to update carrier settings, Tap Settings.Than Tap General, Tap About. That's it. If an update is Available, then you will appear a pop up. No matter Carrier type is different so not get notification. And if you need to secure your device from other use the most reliable and advanced app called LEO Privacy Guard v 3.0.