"When the companies first had cellular service you had to have a wireless fee, and the companies got into the habit of charging this," Tony Merchant, the lawyer who initiated the suit, told CTV Regina.
"When they weren't required to pay the wireless fee, it was sort of like a crack cocaine that they were used to," he said. "They just kept charging, taking the money and mis-describing the money they were receiving."
A Saskatchewan court certified the lawsuit against Canada's cellphone providers on Tuesday.
The suit, first launched in 2004, alleges Canada's cellphone users are owed $12 billion plus interest for unfair "system access" fees collected over the years.