Newbie looking for some help...

[J O S E P H]

I am pretty new to the Samsung/Android world, and I have a couple of questions about the Replenish. I am using the Replenish on Sprint right now, and I would like to know if it can be unlocked and used on other carriers; I'm hoping to be able to use it on MetroPCS. That is my main question, my other question is what is Leaf Rom? What does it do? It seems to be the most buzzing topic regarding the Replenish, and I am very curious about it.

Any answers/info would be greatly appreciated. Thank You