NEW Apple Iphone 3gs 16gb Black (Unlocked) WORKS ON ALL 850/900/1800/1900 GSM/GPRS/EDGE NETWORKS INCLUDING: T-MOBILE* AND AT&T*... JUST POP YOUR CURRENT SIM CARD INTO YOUR NEW SMARTPHONE AND YOU'RE GOOD TO GO! THIS ITEM WILL NOT WORK ON CDMA NETWORKS SUCH AS VERIZON & SPRINT. MEMORY AND SIM CARD IS NOT INCLUDED. Attention-This Phone is Original Apple iPhone,Not Copy or Junk. Please do not upgrade this Cell phone OS version by Apple iTunes,it is easy to locked your sim service.Thanks