This was an interesting case. It came to court because the telecommunications companies involved brought a charter application to court, not because the accused individuals raised charter issues with respect to their rights.
Essentially the police were investigating a jewellery store robbery. They were looking for suspects. They suspected that a cellphone had been used in the commission of the crime, so they sought tower dump warrants, essentially a dump of data from nearby cellphone towers. Rogers and Telus, between them, said this would mean handing over the records of 43,000 individuals who had used their phones within that window of time the police provided, but in addition to that, they sought a great deal more information.