Uninor has closed down its mobile networks in Kolkata and West Bengal as well as in Mumbai from Saturday midnight. This follows the recent Supreme Court order that directed all operators, which did not win spectrum in the previous auctions, to close down services immediately. In Kolkata and West Bengal, Uninor had informed its customers in December last year of an imminent service closure and had requested them to port out to another operator of choice. The spokesperson of the company told Business Line that a majority of its customers in the city as well as in the West Bengal circle have ported out already. But, in Mumbai, some 18 lakh Uninor subscribers did not get a chance to port out before the closure. “The sudden apex court order did not give us the opportunity to inform Mumbai customers in advance,” said the spokesperson. In a statement, Uninor said: “The company deeply regrets this outcome and will make every effort, within the limitations of this Court order, to minimise the negative impact on all affected by this development”.