Help finding model number of phone for BYOP with straight talk?

[WaffleStomper]

So I'm trying to do the "bring your own phone" thing with straight talk, since I'm paying a ridiculous amount of money, and it asks for my phone's model, which I looked up how to do and found it, but mine isn't among the list given. I have a Galaxy S III, so I would figure that it should be one there, so I also have to ask myself if I really found my model number or not. I have a Sprint phone, so if anybody knows the model number I have to put, that would be a really big help

 

[srkmagnus]

So I'm trying to do the "bring your own phone" thing with straight talk, since I'm paying a ridiculous amount of money, and it asks for my phone's model, which I looked up how to do and found it, but mine isn't among the list given. I have a Galaxy S III, so I would figure that it should be one there, so I also have to ask myself if I really found my model number or not. I have a Sprint phone, so if anybody knows the model number I have to put, that would be a really big help

Menu - system settings - about phone - model number. It should say SPH-L710.

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