I've had my iPhone 4 for months, and I've always gotten great battery life. Recently I got an iPad 2, and this has caused me to BARELY use the iPhone. It pretty much just sits in my pocket except for the moments where I send some texts. But for some reason, I recently noticed that my phone gets horrible battery life. For example, today, my phone was unplugged around 10AM. It's 10PM now, and my phone is at 13% battery. That might be fine if I used my phone a lot, but I don't. My normal activities, schedules, and places I go, haven't changed at all. I did not leave the Personal Hotspot feature on, I didn't leave the stopwatch on... I just have no idea why this is happening. Anyone care to list off the possibilities?