I'm a happy user of the FOSS app Wi-Fi Automatic. I have set it to switch off the wifi module when there is no connection for more than 2 minutes. https://play.google.com/store/apps/details?id=de.j4velin.wif...
I'm a happy user of the FOSS app Wi-Fi Automatic. I have set it to switch off the wifi module when there is no connection for more than 2 minutes. https://play.google.com/store/apps/details?id=de.j4velin.wif...