An unlocked cell phone is a cellular telephone handset that can be used with more than one service provider, making it easy for a user to switch from one cellular network to another.
The sequence of steps a user must perform in order to unlock a cell phone depends on the original communications service provider and on the manufacturer of the phone set. Some cell phone sets can be unlocked by inputting codes to modify the software in the unit. Other sets require the purchase of special cables or modification of the internal hardware as well as reprogramming of the phone's data settings. In the wake of the U.S. Copyright Office's decision in November 2006 to allow cell-phone unlocking for at least three years thereafter,