What do the police need mobile phone data for after telecom fraud?

Extract some useful information as clues to solve the case. There are also some information related to the case in the mobile phone, such as downloaded software, chat records of the other party, etc. The police will extract some useful information as clues to solve the case. Telecom fraud refers to the criminal act of fabricating false information and setting up a scam by telephone, internet, SMS, etc., and implementing remote and non-contact fraud on the victim to induce the victim to make money or transfer money. Usually, the purpose of cheating is achieved by impersonating others and forging various legal coats and forms.