Help please?

[meganmuffinsxo]

Erm well i recieved a mms, nothing attatched, cant reply to it, hidden sender (anon), and it also says 'message not found'? also, its a group msg, as in sent to more people than just me, (thats what the icon with 3 ppl means right? xD)
urm what df is this? :L
also, the phone is a galaxy s.

 

[jerofld]

Contact your carrier (or log in to your carrier's webpage to your account) and see if the message was complete before being sent to your phone. If so, you can view it there and probably reply. If not, it could be a spam attempt trying to get you to reply. Sometimes spammers just want to verify numbers are in use before spamming with stuff.