Yes it's the same CID for East and West. I have made a WE sd card with my Samsung Evo+ micro SD 32GB. But at the moment I don't have a RNS315. That's why I'm trying to unlock this SD card. Because I don't want to buy everytime a new sd card. So at this moment we can unlock it by self-made hardware or Nokia E or N Series phones? Can confirm sonebody this procedure?