I'm using a unlocked Samsung Galaxy S6 Edge (32gb model) and am having frustrating issues with the service. I am getting delayed text messages quite frequently, anywhere from 15 minutes delayed up to multiple hours. I have checked the service map and there is no reason why I should be having these issues. I have tried rebooting the phone, I've tried factory restoring the phone, I have called once to koodo (prior to factory restore) and nothing seems to fix the issue. I generally have wi-fi on for the obvious reason of conserving data, I have very mainstream apps, so that shouldn't be a problem either. Anyone have some insight? Im running on Android 5.1.1 if that makes anything any clearer.