For any Fido customers that are still experiencing the issue where VOLTE is not working
1. Call into Fido from a different phone other than your cell.
2, Make sure your cell phone is turned off!
3. Have Tech support do a switch reset on your line.
4. Then power on the phone and VOLTE time!
If this doesn't work please send me a P.M. as i have one other workaround!
Cheers and Enjoy!