Telefonica Slovakia reached the milestone of 1 million active customers. The mobile operator last reported 948,000 customers at the end of March. The milestone was broken by a customer from Kosice, who received a gift from O2 of free calls with the plan 2 Filip EUR 40 for five years. The operator held a celebration in Kosice to thank all its customers. Telefonica said it will continue to offer transparent and simple products, which have been positively accepted.