Since iPhone uses 5 Nano SIMs, you must check if your mobile provider offers Nano SIMs. If this is not the case, the SIM card must be cut so that it can be inserted into the iPhone 5 SIM slot. In any case, this is done on the condition that all service obligations and other financial obligations to the mobile provider are fulfilled and your account is in good condition. Unlock Phone Note 4 on this page. If they have sold you a phone under false prerequisites (as the phone could work), then it may have been stolen or they have sold a phone where the contract was broken. Printing can give the MSL code to qualified customers, but does not mean that the device can be used successfully with any other operator. With the exception of Verizon, which does not block its 4G phones, most operators, including Sprint, block the phone on the network and force only iPhone to use the network. Unlock Verizon iPhone 5 If you want to unlock a Verizon iPhone 5 in one way or another, you do not need to unlock it because Verizon iPhone 5s is unlocked from the box at the factory. Tom Hello, I originally originated an iPhone 5 for Rogers, but afterwards I tried an iOS 7 beta version that was locked ATT, maybe because I downloaded an incorrect firmware. How To Unlock Aquos Sharp Phone. However, it is a bit more complicated: smartphones contain different types of mobile radio tapes or transmission frequencies that data is connected to and transmitted using the cellular towers. However, ATT network operates somewhere around 680 to 800 MHz in the US range, and T-Mobile operates somewhere around 10 MHz (I do not remember the exact numbers). Share on Facebook Tweet on Twitter The SIM card installed in This iPhone will not work supported under the activation guidelines. You will no longer use the existing Sprint network on your locked iPhone.