Success Story: O2 UK Protects Subscribers from Bill Shock Telefonica O2 UK used Sandvine’s unique technology to offer subscribers effective protection from bill shock. Telefonica O2 UK is a mobile operator with about 10 million data subscribers. The reality of smartphones and international travel, as well as new regulatory legislation, prompted O2 UK to seek an accurate and effective way of protecting their subscribers from bill shock. Bill sh

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