Sim unlocked S4? topic

ok so I have done alot of research regarding this and gotten alot of different answers. I am trading my att unlocked s3 tomrrow for a unlocked verizon s4. pretty much I just want confirmation that it will work on cincinnati bell which is a gsm provider. I dont care if data works bc I dont have data I use wifi. I just need confirmatio that talk, text and wifi will work. do I have to root it or ne thing. im not new to the game so I know how to root and everything. I just didnt know if they came factory unlocked like the droid dna and I can just pop in my sim and away I go lol. again I dont care about data. thanks for ur answers in advanced!!

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