CoolNewMobile have the popular Samsung E330N on 12 months free line rental on a 12 month o2 contract. For £0 (after cashback) you get the phone, 12 months free line rental (after which you can cancel), 200 x-net mins per month and 100 texts per month.
The Samsung E330N is an attractive looking 'clam shell' flip-phone with two colour screens and a VGA camera with 4x digital zoom and a bright LED flash.
This offer works by cashback which you claim from CoolNewMobile at specified intervals. If you wish you can purchase via QuidCo.com for an extra £35 in cashback, meaning that you'll make £35 profit on the whole thing!!