(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier identified by a SIM card. SIM locks are used to ensure subscribers finish ...

This SIM card unlocking post is presented by iToolab. iToolab has released a new tool designed to quickly and easily let you unlock your iPhone or other smartphone’s SIM card and even switch cellular ...

There are several things that you need to consider when getting an pre-owned iPhone. The most important factor for most people is if the device is carrier locked. If you plan on using the phone on a ...

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 ...