whatswithjeff.com: "Getting a Samsung Galaxy S4 is much easier when you apply for a 2 year plan or subscription. But the number one downside in getting a plan is that your Galaxy S4 is locked to a particular network. Carriers usually SIM lock the units they sold because they want you to use your Galaxy S4 exclusively to their network only. You can’t insert other network’s SIM. But luckily steps on how to carrier unlock or unlock SIM-locked Samsung Galaxy S4 has been revealed. Today, I’ll show you how you can unlocked your Galaxy S4."