If you do not have the original SIM card or you do not want to update the firmware, go to step 4. 2. If you have the SIM card from the original network (the network where the iPhone is currently locked), insert it. However, activating an iPhone requires a valid SIM card and you can not use iPhone without a SIM card. Enable cards inside the phone as it may be done in iPads and iPod Touches. MasterUnlockCode.com can not be held liable or responsible if you provide a cellular phone unlock code from the U.S. service provider that was manufactured on January 26, 2013. If you receive the unlock code, turn the phone on and off your phone to the third party SIM card in iPhone before you turns it on again. How To Unlock Doro Phone. f. You will see an empty field where you will enter the unlock code. How To Unlock Country Lock Android Phone here. The SIM card you currently have installed on this iPhone comes from a wireless service provider that is not supported by the activation policy now assigned by the activation server.