It should just be as simple as you describe, however, do you know who sent you the messages as it is a common way of distributing spam.
You can also try texting the word "Active" to 2020 which should install the correct settings on your phone.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.
