Edit: Looks like PM has added this feature in the lastest carrier setting update! Check out @luddite post below for details on how to update to the latest (version 28.3) carrier settings!
This is one of the biggest things I've noticed missing since switching over from Rogers. My iPhone used to be able to handle and group non-iPhone text messages together. Since switching to PM I now end up with multiple, separate, disjointed text messages from group chats I have going that include both iPhone and non-iPhone users.
I'm sure Telus supports this feature and while I am fully aware that PM is meant to be a discount brand it would be great to see this very simple feature supported by PM, too.
Fingers crossed!