Not sure when I have started curiosity in IPHONE. The current market version is 4G, Used versions are 2G and 3G. There are many differences, 2 of them are of interesting to me:
- 2G in fact it is 2/2.5/2.75G network type: GSM, GPRS, and EDGE, no GPS
- 3G network type: UMTS CDMA2000, with built-in GPS price new A$719 (8GB), Iphone 3 and 4 (price A$859 for16GB, A$999 for 32GB)
- 4G new network type (LTE). not in any smartphone yet
