I have a samsung c300 that is locked to Vodafone and i want to unlock it to use my O2 Card. I have bought software and e700 cable to unlock it but every time i try to unlock it using the software Samsung C300 E250 Free 1.2 i get an error message with no other information. I do not know why, i take battery and sim card out and in but to no success. Any help would be greatly appreciated. Thanks!
samsung C300 phones have a new type of security and cannot be unlocked with free software. the only remote solution for this is the samsung remote server, this is the only server in the world who can unlock the new samsung phones you need an default samsung datacable type PCB093LBEC and put the switch into mode DL (remove the rubber part first) then download the software from http://www.unlockSamsungOnline.nl/eng login (after payment) and select your model (c300) press the unlock button, wait 15 seconds, and your done.