Unlock my Sprint iPhone

What does it mean for my device to be "locked?" or "unlocked?"
Provided by: unlockitrightnow.com
Yes we found the SOLUTION! The term "locked" typically refers to a device that can only be used on the Sprint network and cannot be activated on a competing carrier's network. An "unlocked" device is no longer locked to Sprint's network and the user may attempt to activate it on another carrier's network. There are generally two scenarios for device unlocking:

SIM Unlocking: A device may be referred to as "locked" if that device was manufactured with programming restrictions that prevent another carrier's SIM card from being inserted into the SIM slot for use on a different network. Generally, most smartphones launched after February 2015 are SIM unlock-capable—meaning the SIM slot can be unlocked for potential usage on other carriers in the United States. Even if unlocked, Sprint SIM unlock-capable devices may not work on another carrier's network. Whether an unlocked Sprint device can be used on another carrier's network is subject to that carrier's policies and network compatibilities.

MSL Unlocking: A device is "locked" if it is manufactured with a type of disabling software and a locking code (referred to as "Master Subsidy Lock" or "MSL"). Generally, MSL locks were utilized on devices launched before February 2015. Sprint can provide the MSL code to eligible customers, however this does not mean that the device will be able to be successfully used on any other carrier domestically.