How long can a short message be kept in the records of the communication company?

The records of the last three months can be found on the list inquiry machine, but if the mobile phone doesn't receive the text message within 24 hours, it can't find the content of the text message. Generally, you should be able to receive MMS normally within two hours. After two hours, the system will transfer it to the MMS album for you. You need to link photo.monternet.com Extract (only applicable to mobile users and registered MMS albums). If it is not received, it will be automatically deleted in the system within 48 hours.