HI @Melody2025
existing customers? what phone do you have?
this change may affects you
https://www.publicmobile.ca/en/get-help/articles/850-turndown
basically, Telus is refarming all of their 850 to 10 MHz LTE B5 in their markets, mainly BC, AB, Windsor, Ottawa, Montreal, Quebec City. Bell has not done this, so it won't affect area that has Bell networks which Telus/PM use
So, it might affect voice calls for phones that has only 850 Band 5 on the phone but lack 1900 Mhz, those phone people bought in other country. That's why your iPhone , Pixel are working but not Vivo. Vivo is not designed for North American and not have all the required 3G bands
