When I bought my first Android device, I kept all its features turned on like the Bluetooth, WiFi, gravity sensors etc. I thought what is the use of having them if you do not utilize them all the time. But soon I realized that turning all these features drains the battery charge much faster than anything else. So I permanently turned off the Bluetooth and learned to turn off the WiFi when not needed. But it is a lot of hassle to switch on and off the WiFi every time you want to use it. If you use WiFi between a certain time range everyday (say between 2 PM and 8 PM), then WiFI Auto (also called WiFi Auto Off) app can take the hassle out of WiFi toggling and turn it on or off automatically for you.
WiFi Auto is a smart app for your Android device that can toggle the WiFi feature on or off based on a number of criteria to conserve the battery charge and increase the device standby time. For example, it can automatically turn on the WiFi every time you unlock your smartphone and switch it off after 1 minute of no network activity. There are many other options available too.
After you install this app, it keeps working in the background and automatically controls your WiFi. In the app interface, you can find the options that control how and when the WiFi is going to be turned on and off. You can alter the time range for turning off and on from these options. There is big toggle button at the top which disables/enables the WiFi Auto app itself (great for situations when you need uninterrupted WiFi access).
You can also access Advanced WiFi Settings from the menu at the top-right. Here you can choose whether you want to keep WiFi on even in the sleep mode, avoid poor connections, allow services to scan you network even when WiFi is off, optimize WiFi to extend battery standby time and so on.
Conclusion: If you are using WiFi on your Android device extensively, then it can drain your battery in a matter of hours. With the help of the WiFi Automatic app, you can automatically turn off the WiFi in your device to conserve the battery charge and improve the device standby time.
You can download the WiFi Auto app from https://play.google.com/store/apps/details?id=de.j4velin.wifiAutoOff.