Hi Everyone, I was doing so thinking about my next iPhone and was thinking about a Sprint/Verizon iPhone 4S or next upgrade to 5. I like the idea of the GSM slot and being able to use it overseas easily (and maybe in country with the ATT GSM chip). So, I am asking for some help from this forum community. I could switch my US number to Sprint for when I am in country and use the GSM chip for out of country usage. If you have such an iPhone, how has it been working for you? Has it worked well for you? Problems? Does the GSM help you out in or out of the country? Does data get affected at all if you are on the GSM chip? Any and all info is helpful.