I'm trying to set up a hidden camera to see if my brother is messing up my room or taking stuff, because my book disappeared, so how can I maximize its battery life? It recently ran out in 1 hour when I attempted to set up my camera.It had airplane mode and darkest screen setting. Any other ways to get it to last for 4-6 hours at least?
См. статью: How to maximize iPhone 4 battery life?