Use a SIM ejector tool or paperclip to gently remove the SIM tray. Take out the SIM card and inspect it for damage, such as ...

Once you’ve activated your iPhone with your carrier, it should continue to work on the cellular network without any problems as long as you’re within range of a tower. Nevertheless, the vagaries of ...

Every smartphone is either locked or unlocked, depending on where you buy the device from. When you acquire a new mobile phone directly from a U.S. carrier like AT&T or Verizon, it will be locked to ...