1. Go to Settings> Location>Tap on mode and select Battery saving mode. 2. If your phone has an AMOLED screen like the most samsung devices, use a dark colored background, because AMOLED screens only illuminate the colored pixels. Black pixels are unlit, so the more black pixels you have, or the more darker pixels, the less battery you need to light them up. Using darker app backgrounds/themes and darker launcher themes will further maximize the battery life of your device. 3. Don't use auto-brightness. Auto-brightness is usually way brighter than you really need so it's much better to manually set a brightness level that is low and still comfortable, and then just bump it up when necessary. This is one of the main ways to improve your battery life as the screen is one of the biggest battery drainers. 4. Turn off haptic feedback (vibration) in keyboard and button press, it's another battery drainer. 5. If your phone has NFC then go to Settings > M...
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