Can an att iphone 4s be jailbroken and used for verizon?

Can an att iphone 4s be jailbroken and used for verizon?

No
1. Jailbreak is to add mods to your phone the correct term is unlock
2.At&t is GSM and Verizon is CDMA which means At&t uses sim cards and Verizon dosent.

No, you can't unlock an AT&T iPhone 4S for Verizon because it is GSM and Verizon is CDMA.