Using a Verizon iPhone 4s on Straight Talk?

I recently upgraded from the iPhone 4s to the iPhone 5c. I have a contract with Verizon. My fiance uses Straight Talk and would like to use my 4s. Question is, can it be activated on the Straight Talk network? The phone has a SIM card slot… I'm not sure if that makes a difference.

Maybe. I know that you can now bring your Verizon phone to Straight Talk, but I do not know if you can bring a Verizon Iphone to Straight Talk.

You can buy a code from Wal-Mart for $15 then transfer service from his current phone to the new phone. He will need to use the $45 airtime card. If he uses the $30 card, he will have to purchase the $45 airtime card and add it to his phone then transfer his service to the new phone.

I have not used the bring your own phone program. You can go to the Straight Talk website and put the phones ESN number in to see if it can be used with the bring your own phone program.