Mobile World (part 1)

I am here to explain what an unlocked cell phone is, it may be better to describe a "locked" cell phone. Normally, when you purchase a cellular phone and a particular plan for that phone – through service providers like singular, Sprint, Verizon version, and T-Mobile – your cell phone will remain "locked" within their network. If you are trying to change carriers for your cellular phone service, your particular cell phone will not work. So, someone using Cingular who wishes to change plans for and become a T-Mobile customer service will also have to purchase a brand new phone.