Today I decided to use an open wifi network to do some surfing in order to save on minutes. Worked great. The problem is that when I was done I forgot to turn it off when I was done. My battery was dead in a matter of hours. I'm assuming that leaving the wifi on did it. Is there a way to set a time out for wifi? Another thing is that I never got a low battery alarm. Is there a way to turn one on. If there is I can't find it.