How much do you pay for your iphone plan?

THE ONLY CARRIERS THAT OFFER IPHONE IS VERIZON AND AT&T.. IF UR GOING ON UR OWN THE LOWEST VOICEPLAN THAT ATT OFFER IS THE NATION 450 UNLIM MOBILE TO MOBILE 5000 NIGHTS AND WEEKENDS,ATT NO LONGER OFFERS UNLIM DATA ONLU DATA PLANS AVAILABLE R THE 200MB=$15, OR THE 2 GB=$25... AND IN TXT IF U WANT UNLIMITED ITS $20 :)