Hey All, I bought an unlocked samsung S4 from US and used it in MX. I didn't sign a contract with my service provider and took a prepaid connection. All was well till I could fly to India and took a new connection where it said "network locked sim card inserted" I tried unlocking the phone using the*#0011# method but didnt work for me because I am not getting the main menu where we could select the UMTS mode. I am not sure what to do and how to proceed. Can anyone suggest what can be done ?