http://technologyfeed.net/samsung-galaxy-s4-vs-other-phones-specifications-compared/
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US residents can opt out of "sales" of personal data.
Samsung had officially launched their latest offering- the Samsung galaxy S IV or the galaxy S4-at a special event last month, the grand unveiling was accompanied by an orchestra along with a four level theatrics show which was watched by an audience of thousands.
http://technologyfeed.net/samsung-galaxy-s4-vs-other-phones-specifications-compared/