iMessage and FaceTime not working

[Jane2024]

I just finished transferring my number and I was with Fido before. After the SIM activation and transferred my number, then iMessage and FaceTime both not working, but they worked with I was with Fido and my iPhone is iPhone 13 Pro Max. I tried multiple times of turning on and off the iMessage icon, but it kept telling me that "iMessage Activation: An error occurred during activation. Try again. " Not sure what to do next?? Can someone please help?? Thanks!!!

[Handy1]

@Jane2024  Try turning FaceTime off and iMessage off  and shut phone down for 2 mins power back on and turn on face  time and iMessage back on 

[hTideGnow]

HI @Jane2024 

should be easy

just go to iMessage settings, remove the phone number

then reboot the phone

then go back iMessage and put the number back