I bought new iPhone 3GS from someone on craigslist and i need to know what network it is unlocked to. I am guessing there are links online where we can put IMEI number and get the unlock status right ? I do not have any normal SIM and i only have MicroSIM from Tmobile but no adapter so cannot insert that into the 3GS. Any suggestions on where i can check the unlock status ? I know for a fact that iPhone is locked but need the details from somewhere where i can put the IMEI number.