Today I learn another new thing via writing paid post, ie locked phone and unlocked phone. Previously I only know that my cell phone only work for one carrier, now I know I can use other carriers services too provided I unlock my phone using certain software.
A locked phone will only recognize a SIM card from a particular carrier. If the cell phone is unlocked, then it will be able to recognize a SIM card from any carrier. Basically the "lock" is a software setting that keeps the cell phone "loyal" to one carrier. If you unlock it, then you can use other carriers besides your existing carrier now.
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