how to switch carriers

[AC Question]

Hi,
My name is Bud and my question is I am buy a Samsung galaxy s4 i545 that was used on Verizon, I have metro pcs
and would like to unlock the Samsung and chance sim card to metro.
Question is how do I unlock the phone secondly is that all I have to do?
Thank you in advance for any directions you can give me.

 

[orlandoeduran1977]

Won't work. .....I tried with my unlocked sprint galaxy s5

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