I have an officially unlocked iPhone 4 from a non-US carrier. Now that I'm in US, if buy a prepaid SIM card from AT&T and use it in iPhone, do I get 3G(WCDMA) or GSM network? To put it in the context, do I see "3G" or "E" in the iPhone status bar?
Could anyone clarify if this chart is correct?
Enable 3G, Enable Cellular Data, Result Yes , No , Make 3G call; use no data Yes , Yes , Make 3G call; use 3G data No , Yes , Make GSM call; use EDGE/GPRS data; No , No , Make GSM call; use no data;