I would recommend the app WiFi Auto to automatically switch on and switch off Wi-Fi!
If your battery in the device becomes exhausted quickly as possible that the cause is the WiFi module.
The device uses a battery to maintain the connection over WiFi even when the screen is off.
This application is best suited to automatically turn on WiFi when the screen is unlocked
and turn off WiFi when the screen is locked.

Some of the best features:
- Tap the app to enable / disable WiFi!
- Press the Widget to enable / disable WiFi! (Without switching applications)
- Application włączay WiFi when the screen is unlocked and turns off WiFi when the screen is locked (you can set the delay of the operation in case you accidentally temporary shutdown of the screen)
- Convenient easy to use and navigate user interface
- Ability to set the application to run automatically when you power up
- Active development of applications (email me if you have any questions suggestions comments)
- More coming soon!

Required qualifications:
View Wi-Fi connections
View network connections - to serve ads and support my work (you can remove the ads in the "Remove Ads")
Change network connectivity - to support WiFi
Connect and disconnect from Wi-Fi - to support WiFi
Full network access - to support WiFi
Run at startup - to set the application to automatically start when you turn on the device
Control vibration - to handle the vibration