So I returned my iPhone 4 yesterday and got shamefully put down by apple with the white announcement lol. But regardless. My 3GS has terrible battery life. Like really bad. I've barely used it today from 10am and it's at 40 percent and that's literally mostly asleep. My question is , is there any way to salvage a bad battery? By using a specific charge cycle to maybe boost it up a bit? I just need a temporary fix while I use this phone. Thanks!