Can I put my iPhone 4 on straight talk if?

Can I put my Verizon iPhone 4 on straight talk if I owe a contract bill?

No, only att iphone will work on straight talk.
att is a gsm carrier and that's what ST supports.
Verizon is a cdma carrier and can't work on ST

New York Inc is correct. Straight Talk's website says, "This program is not available with CDMA (i.e. VERIZON, Sprint, Metro PCS), TracFone, SafeLink, NET10, Straight Talk or BlackBerry phones."

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