即以$157個plan為例, iPhone 4 16GB 個優惠價係$3,488, 咁123係要我簽約個陣俾$3,488定係先俾iPhone 4的全價(e.g around $4000-$5000)再用24個月月費方式回贈呢$3488俾我??
更新1:
cry**** 即係簽約個陣俾要俾你個條formula計出來的amount??