Unlocked phone and Locked phone is different? The difference is that a locked phone has a software code on the phone from using another carriers. Once a phone is unlocked, you can put another SIM card and get a variety services. How an unlocked phone works? if you want to switch wireless carrier, you can easily do that just put in the new SIM card, No need to buy a new phone..! And this is handy for people travelling overseas. You don’t have to pay for roaming just put the local SIM and SNAP a story to your friends :) “GIVE YOU MORE FREEDOM WITH YOUR MOBILE”