How long can I check the telephone traffic?

Take China Mobile as an example. At present, the call records of China Mobile can be inquired for six months at the longest, but they can't be found when the time comes. China Mobile will only keep the phone records of users for nearly six months. If you need to inquire, you can log in to the online business hall, mobile phone business hall or offline business hall of China mobile operator with your ID card. However, the mobile phone card must be registered with its own real name, otherwise it has no right to inquire.