I want to know who sent me the message. How come?

At present, China Unicom has a detailed inquiry service for short messages, but at present, it can only inquire about the number of short messages sent, but it can't inquire about the number of short messages you received, that is, it can't inquire who sent them to you. If you have a short message record on your mobile phone or upload the short message record to a third-party software to make an appointment, it is suggested that you can query the record of receiving short messages on your mobile phone directly or through third-party software.