Apple iphone 5 is definitely coming in September of this year, not too long ago Walmart made an announcement and start selling Apple iphone 4 on sale for $147. Apple made similar annoncement and start selling unlocked iphone 4 for $649 (16 GB) and 32 Gb edition for $749.
You will get all the features of iPhone 4 in unlocked iPhone 4 — FaceTime video calling, Retina display, HD video recording, and more — in a phone that you can activate and use on the supported GSM wireless carrier of your choice, such as AT&T in the United States.
If you don’t want a multiyear service contract or if you prefer to use a local carrier when traveling abroad, the unlocked iPhone 4 is the best choice. It arrives without a micro-SIM card, so you’ll need an active micro-SIM card from any supported GSM carrier worldwide. For long time unlocked iPhone 4 are available on amazon store – 16 GB iphone 4G for under $500 and iphone 4G – 32 GB edition for under $600