1. Use black wallpaper
If your phone has a AMOLED screen (like most Samsung devices), use a dark color. It can save battery because AMOLED displays only the colored pixels light up. Black pixels are without light, so it has more black pixels, or pixels darker, less battery you need to illuminate.
2. Don’t use adaptive/auto brightness
Do not use auto brightness display. It can be good, but high brightness is generally brighter than you really need. It is much better to manually set super low brightness that is still comfortable, and then only make it up when needed. This is one of the main ways to improve battery life; the screen is one of the biggest suckers of the battery.
3. A shorter screen timeout setting saves battery
Set the screen timeout as short as practical for your time. Just think, if the screen timeout is set to one minute, it uses four times as much to have it on, every time the screen turns on, if the time limit is set to 15 seconds.
Studies report that the average smartphone user turns your smartphone 150 times a day, so anything you can do to limit the frequency (through self-control or other methods listed below) will help keep your battery running longer.
4. Turn off vibrate and haptic feedback to save battery
Don’t keep vibration on unless you really need the vibrating alert for incoming calls. In fact, it requires more energy to vibrate the phone makes it touch. Turn off much haptic feedback (that buzz you get from typing on the keyboard). Of course, it feels cool, but not really add anything to the experience, and is a battery drainer.
5. You don’t need to be connected 24/7
Turn off GPS, Bluetooth, NFC, Wi-Fi and mobile data when not needed. Disabling location data, or change the configuration location using Wi-Fi or 3G data instead of GPS works perfectly well.
Simply plug the Bluetooth and NFC, as long as you need them (although they consume very little power), and there is no need to have both Wi-Fi and mobile data at all times, especially if you know exactly when you will need a or the other.
If you use Wi-Fi a lot, however, say that at home and at work, then it makes sense to keep Set your Wi-Fi network to ” always during sleep, ” because it uses less energy to keep your wireless reconnect every time you pick up the phone.