Wirelessly posted I have AT&T mainly because I'm constantly traveling overseas where GSM is prevalent. Works great! The family is putting pressure on me to switch to Verizon (coverage is better where I live). However, I'm concerned about how the 4S works overseas. Do you have to do anything special to get a GSM connection overseas? I understand the 4S has a universal antenna (GSM / CDMA). My question is when departing the US (Verizon-CDMA) and arriving overseas (GSM), does the phone automatically pick up available networks or do you have to change settings, SIM card, etc? Thanks in advance.