I think I have a battery issue but know very little about smart phones. My SII is about 1.5 years old. Here's the situation....the phone is 100% charged. When making calls, texting, even Pandora my phone works fine. the problems start when I access outlook email and the internet. As soon as I open a webpage or an my inbox the screen starts to flicker and then shuts off. If I turn it back on is shows low battery warning. Something took it from 100% charged to 18% charged. If I don't turn it back on > connect to charger, the battery icon shows it as completely dead and then after it registers it shows it back to 95% charged. this started as random happenings but now it occurs everytime I use email or internet. is my battery shot (and I need a new one) or is there something else I can do? any suggestions appreciated. thank you!