I an having the same problem, can't send a text to the UK ead O3 keep saying that this problem is unique to me
Hey @Guest_74105, Welcome to the 3Community 🙂
Since you posted your query on Sunday has this been resolved on your end? If not can you let me know if you are roaming in the UK or are you trying to send and SMS to a UK number from the Republic of Ireland?
I would love to drill you