I received a text alert today when my phone was locked and this showed the preview screen saying " Text message received from" it then had a number I did not recognize. I then unlocked my phone expecting to be taken into my messages but was just shown my normal homescreen. There is no record of a text message at all. Has anybody else had this as this sounds very much like a virus or something similar, although everyone on here always tells me not to worry about viruses on the iPhone? I have tried contacting my phone company and they cannot confirm or deny what text messages I receive so are able to help.