How did China Mobile's online business hall find the short message sent a year ago?

China Mobile's online business hall does not provide short message inquiry one year ago, but only provides detailed list inquiry within half a year, and can't inquire about the content of short messages, only the mobile phone number and time of sending and receiving short messages.

China Mobile Online Business Hall SMS Details Inquiry Method;

1, open the mobile online business hall, select the territory first, and then click Login;

2. After logging in, on the left side of the page, click the phone bill service;

3. After entering the phone bill service menu, find the detailed list query, and click Enter to query the call and SMS records within 6 months.