When you use your smartphone to surf the Internet, Ademe recommends using Wi-Fi rather than 4G, which consumes three times more energy.
Disable unused features and apps
On a day-to-day basis, also consider disabling the features that consume constantly and that you do not use: geolocation, notifications, automatic updates and downloads, updating applications in the background, etc.
Activate “airplane” mode or turn off the phone at night
Finally, putting airplane mode on at night saves battery power. You can also turn off your phone.