I have a 16 GB Tesco UK Moto G that is locked, and I want to unlock it. But when I insert a foreign SIM (from O2 Ireland) I get no prompt for an unlock code. Instead it just says "Emergency calls only." I've contacted several of the online unlock code suppliers and they could not find unlock code in their database but then I have paid for more expensive code from Simon Green on ebay and he sent me that unlock code. I am on GPE 4.4.4 and UK tesco SIM is working fine but I am getting Emergency calls only with every other SIM card. I have tried 3 different SIM cards from different providers and they work fine in my second Moto G. Is there some way I can get this phone unlocked ?