Hi guys,
Just want to check something with you all. As I understand it, mobile carriers in US predominantly do not use GSM for their 3G networks, ie no sim cards. So how do they work actually? You have to buy a phone from a carrier and it’ll be registered with their network?
Asking because I may be going to Houston for a training stint and want to know if our local smartphones can work there if I purchase a plan from a US carrier =p
They do use sim cards and GSM what they use for 3G. However, kindly check your smart phone's frequencies vs the wireless provider's frequencies before choosing a wireless provider. IIRC, like AT&T uses 850 MHz (or switching to this frequency) for their 3G while T-mobile uses like 1900 MHz (like sg). So your phone might or might not support that frequency for 3G. I'm using a US-bought AT&T-frequency Nexus one is sg.