The iPhone 5 is already unlocked in a way. If you buy it from Verizon, you can get a SIM card from another country and use it internationally with this SIM card. And, as a mobile manufacturer, moving can reduce Reduce costs, limit the number of their product models by packing them with more technologies and wireless radios that can be used by a number of operators. How to unlock a T-Mobile iPhone 8 Plus and iPhone 8 We recommend checking the IMEI code if it is blocked or blacklisted. But these days may soon come to an end, as mobile operators use the same network technology and common radio frequencies to build their next generation network. However, the ATTs Network operates somewhere between 680 and 800 MHz in the US range, and T-Mobile operates at 10 MHz (I do not remember the exact numbers). I like to accept the offer, but I do not know if it supports my network (I under contract, so regardless of whether I using my phone or not, it has to be paid) or if it may blink to something else a prepaid Network like Metro or Virgin Mobile.Apple can offer or recommend answers as a possible solution based on the information provided; Each potential issue may contain several factors not described in detail in the discussions in an electronic forum, so Apple can not guarantee the effectiveness of proposed solutions to community forums. Factory Unlock Iphone 6 Plus Sprint here. In the case of LTE, Verizon and Sprint phones, depending on LTE frequencies and band classes supported on the device, may also be compatible with the LTE networks of their GSM competitors. Each model is created specifically for specific LTE tapes, and if you do not have the correct band on your phone, it is not possible to get an LTE service (or change the tape for that matter). In addition, your phone will be locked before leaving your current operator, as it is not good to stimulate to help you through the process.