Can Unicom staff check the content of short messages? How long ago can I check? Can it be deleted?

1. Because the content of the short message involves personal privacy, you have no right to inquire; If there is a record of sending SMS in the mobile phone, you can query the content of SMS directly in the mobile phone. 2. At present, Unicom only provides detailed list inquiry for mobile phone users in the past six months (including the current month), including calls, SMS/MMS, value-added, data list, etc. You can log in to Unicom's online business hall, click "phone bill inquiry" > "phone bill inquiry" on the home page, and select the details of SMS and MMS to be inquired, then you can inquire the number details of SMS sent in the last six months (including the current month).