See if the intercepted message shows read?

No, according to the query entertainment network, the interception function only works on your own mobile phone. After intercepting a short message, it will not be deleted, but stored in the interception record. At this point, open the interception record to view the short message, which will be marked as read. But this will not affect the other party's short message status, and the other party will still think that this short message has not been read.