You shouldn't find yourself without battery because of Wi-Fi when you are not using it. With this app it's possible.
Ratings about WiFi Saver - Ultimate Manager for Android
English | German and
Android 4.0, 4.1, 4.2, 4.3, 4.4, 5.0, 6.0
6 years and 8 months ago
Abo Hani OLD