Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5) I want to switch to Verizon and get on my girlfriends plan. If I were to buy an iPhone 4 in June, how much would it cost to get the next iPhone if it's released in September? $399 perhaps? I'm not sure if she is eligible for an upgrade yet. I'm really tired of my 2 year old 3GS, as well as being the only person with AT&T. I never use any of my unlimited mobile to mobile minutes.