BARGAIN IPHONE 4 16GB OPEN TO ALL NETWORK ?

HI I HAVE GOT IPHONE 4 16 GB OPEN TO ANY NETWORK (VODAFONE- ORANGE- T.MOBILE- VARGIN-O2-..........ETC) JUST FEW I BEEN USED FOR 10 MONTHS PRICE IS 220 NO OFFRE FOR MORE DETAIL CALL ME TO MY 07956353161 PLEASE NO TEXTING PLEASE I PLEASE NO TIMES WASTER PLEASE HAVE NICE DAY