So I have an iPhone 4S that I often use to play games. It does not have that many apps, only the base apps and around 15 extra. When I turn it off for 20 minutes uncharged, it loses 8% battery from 100%. I've turned off Bluetooth and Data Roaming, and I turned off all Notifications. My brightness is only at 25%.Is there an explanation for this mysterious draining of my battery? My iPhone is around 1.5 years old.
Added (1). I mean battery, btw. Oh yeah, and it's Jailbroken, but I haven't used it to download anything that would make my phone run down…