Samsung galaxy s 3 open to all networks ?

nealy new phone i bought few weeks ago i have purchace paperwork and it cost 500 all box and everythin that came with it is with it you can contact me on 01792428886 Brand New Factory Unlocked Sealed Box 16GB Samsung Galaxy S3 in Marble White. Unwanted upgrade received yesterday. I can travel to meet you or you can come to my home in Kent to collect 399 cash only (face to face) I will consider very near offers but will not reply to any that I consider to be unreasonable for a brand new unopened Galaxy S3 S3 SIII S III S 3 Decent condition few little scratches nothing major Back of the phone is slightly dented only in a few areas on the 3 Network (May be blocked not to sure) I am selling my unlocked blackberry curve 9300 (black+chrome). It is in very good condition, looks like new as you can see it on the pictures. It is unlocked for all networks. The phone comes with charger and 1GB memory card. Grab a Bargain No paypal!!! Any questions feel free to ask 07517984351 mobile phones all working but have small fauls that i dont no how to fix the purple samsung is a really nice phone has touch keypad n a great camera however the screen is broken (not popped) just fuzzy but no back or battery the vodaphone phone works perfect but has no charger but works fine just a few marks on the back with battery and back the little nokia again works perfect and is a cute little phone however the back light has stopped working so the screen isnt very clear but can still be seen comes with battery and back but no charger finally the silver samsung this one works fine too and comes with battery and back the only problem is the top keyboard has stopped working so you press buttons on the top keypad and nothing happens they are all ok phones i