Wp7 received a short message that said "unknown". Is the mobile phone poisoned?

The short message of this "service provider" is not only available on WP7, but also on Android.

I used to have this kind of short message on Android, but now I use WP7. But most of them seem to be advertisements sent by mobile phones or something.

I never clicked on it, just deleted it.

There will be no virus in this kind, but there may be false advertisements. This has nothing to do with rogue software, it is completely sent by mobile or other operators.