After Carpenter v$.$ United States, the police may have access to CSLI under which one of the following circumstances. The police may have access to CSLI whenever they want to$,$ for CSLI is wireless carriers property and not cell phone owners property. The police may have access to CSLI if they demonstrate that access to the data is necessary for the conduct of a criminal investigation. The police may have access to CSLI if they have probable cause to believe access to the data is necessary for a criminal investigation. The police may have access to CSLI if they have probable cause to believe access to the data is necessary for a criminal investigation and if they have a warrant.