why does my iphone 6 constantly popping up this message: we apologize for the inconvenience caused. we are currently rectifying the problem. please try again later. thank you"

I've never seen or heard of that message from Apple. Is it a notification (ie, seems to be a standalone error message)? Or is it perhaps on a Safari screen or part of another app?

When it happens, please take a screenshot by pressing the home and power buttons at the same time, and post that screenshot in this thread.

Matt

Any chance your phone is jailbroken?

I have never seen this message on any of the iPhones I have used. If the Dismiss button is on the screen and does not respond press the round Home button. If that returns you to the Home screen, the message was related to whatever app was running last. I suggest you quit all apps like I describe then reset the iPhone. Double click the Home button to show the screen with running and recently used apps. Each app icon will have a sample page above it. Flick up on the page (not the app icon) and the page will fly away and the app icon will disappear. This quits that app. Do that for every app that appears in that area. Then to reset the iPhone press and hold both the Home button and the Sleep/Wake button continuously until the Apple logo appears. Then release the button and let the device restart. You will not lose data doing this. It's like a computer reboot.

I get this pop up too how to get rid off it?

This is a message from your mobile phone carrier.

contact them and let them know they keep sending you this message

Im also getting this.
Does anyone found a fix for this?

This happened after I update my iPhone 4s from 7.0.4 to 8.3
Using DiGi as a carrier

sambruce wrote:

Using DiGi as a carrier

Contact DiGi and ask them what the problem is.

ady contact digi and ask them but they saying they r not sending this msg and ask me to contact apple