O2

I have to wait and once there is a development I will write it can help someone else thank you

Should I then contact O2 or Three mobile to resolve the issue?

I don't remember the exact date I switched to O2 but it must have been 4 years since then.

The porting of the number was more than 4 years ago since then my number is on O2.

As I said in the above post, my SMSC number +447802000322",145 is a little different from that of my wife who uses my other O2 number with her card in my phone everything is correct so I don't see what app would fix a problem on my sim and not on her...