International texting that probably is from Canada only. When leaving the country, jeep your device in Airplane Mode and only turn on WiFi to use WIFI Calling for calls and texts. RCS and iMessage both use data to text, which uses data.
I'm just curious but what makes you think this issue isn't potentially caused by Telus? This wouldn't be the first time I have seen issues with ports from Telus to other providers, one of which involved a friend of mine trying to leave them years ago...
That's because some manufacturers take the cheap way in their dual-SIM implementation. Have you tried putting your SIM in the second SIM slot while dual-SIM is enabled to see if that makes any difference? If it doesn't, then it's more than likely the...
Fido is one of the many Rogers brands. If you think there is competition in Canada. You are mistaken. Everything is either owned by Rogers or Bell/Telus.