I have an issue with my Nokia Lumia 1020 with Koodo. I receive many duplicate text messages. The problem seems sporadic, and can repeat messages from multiple people up to ten times. Is there a setting that in not configured correctly?
If the problem persists, it could be a problem at the network level in which case I'd call Koodo at *611 from your Koodo phone and speak with technical support. You may want to have another phone handy in case there needs to be troubleshooting done on your Lumia while you're on the phone so they have another line to call you on.
I've had this problem numerous times.
One time, I was told that it was that you may be in a bad reception area. Where there is limited cell coverage. Which made sense because I was getting the multiple texts while at work.
The last time, I had to reset my phone to factory.
Phone seems to work good, for now.
It is very annoying. Hope that it gets figured out.