I am unable to send TEXTS. I receive them no problem, but unable to send.
I'm able to send a screenshot and send it, but no text. So SMS don't work while MMS work fine.
Reboot phone, tried SIM on other phones, same issue
Welcome to the community and Happy New Year!
Have you verified your phone has the correct SMS Centre number? It should be +1-514-993-1123 (see here).
Since you're noticing the same issue with other devices, it's also possible the SIM may have been damaged.
Hope this helps 😀