Better to have the SIM card in your phone, but it can work without the SIM card being in your phone, as it is done with IMEI number and it is an automated process. Also make sure you never use smart Buy a device with no warranty update cycle of at least 5 years, with the speed increasing with each new software update. However, this is still a relatively new area and, according to my own experience, I can say that the other tools and software are not yet fully integrated and subject to delays and errors, etc. My passion is to answer your problems. I help iPhone, iPad, and iPod Touch users to recommend solutions for common iOS errors and tools that enhance their experience. Another group has developed its own hack that lets you unlock iPhone in about an hour, free to use free open source. For this reason, I suspect that there may be some intermediates on the side of the carrier, while the client side at the request of the original customer does not unlock when an over time has elapsed since last activity, the entire sell-side can manually search for an IMEI when requested by a third party locker and unlock it externally. My Iphone 6 Will Not Slide To Unlock here. My phone is brand new when I turn it on, ask for the language and Landkram and then I will not leave my home screen without a SIM card. I would like to use the T-Mobile SIM and this would be the function. Now the instructions on the page have followed to complete the order, iPhone IMEI will send your iPhone IMEI to the carrier provider and the device from the Apple database is whitelist. Pantech Phone Unlock Code. It either it works or not working (usually when the iPhone is locked and the SIM card is not compatible) but you will not harm the iPhone or damage anything . You do not need an active SIM card to activate an iPhone; Each SIM card that matches the network operator as an iPhone is connected, work, or if the iPhone is unlocked should work every SIM card.