I received a text message today. Are you infected with a virus?

Empty SMS doesn't mean poisoning! A mobile phone is different from a computer. At present, the only mobile phone viruses I know are Trojans, stealing information and maliciously deducting fees. You can see what number was sent to you. If it's a strange number, just delete it. (If you don't want to be poisoned, don't attack the network links of SMS and MMS without knowing it. If you order it, you are likely to be poisoned. )