If you are tired of the battery does not reach the end of the day, here we bring you a good solution quite effective.

Wifi vs Data will save you battery consumption when you are out of your favorite places, since it will detect when you are near them by locating the radio cell to which your home, work, friends' house, family, cafeterias, restaurants belong.

when to activate the Wi-Fi connection. As soon as you leave your favorite areas, the Wi-Fi will be automatically deactivated, and thus, your phone will not be continuously scanning the wireless networks, with consequent battery savings.

You must add the radio cells to the list so your device knows when to activate the Wi-Fi connection. As soon as you leave your favorite areas, the Wi-Fi will be automatically deactivated, and thus, your phone will not be continuously scanning the wireless networks, with consequent battery savings. Keep in mind that Wifi vs Data checks every 2 minutes if the phone is connected to a radio cell of your list, so if for example you arrive at your house and you have not connected the wifi you must wait a few seconds, then the wifi will turn on automatically.

Permissions:
RECEIVE_BOOT_COMPLETED - is required to start the service again when rebooting your device

The following permissions are required to observe and change the WiFi state:
CHANGE_WIFI_STATE
ACCESS_NETWORK_STATE
ACCESS_WIFI_STATE

The following permissions are required to the "turn on/off WiFi when entering/leaving these locations" feature:
INTERNET
ACCESS_COARSE_LOCATION
ACCESS_FINE_LOCATION

Screenshots: