[RBS] Unlock iphone 4s?

[Daniel Fruchter]

I have an iPhone 4s second hand from someone who had Sprint as their
previous carrier.
I am in New York now.
Does anyone know how to unlock it or where to go to get it unlocked?
Is it advisable to get it unlocked in the US or Israel?

Thanks

Daniel
Fruchteraliyah at gmail.com
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