1. Adjust brightness and use auto-brightness
The screen is one of the components that consumes the most battery, and high brightness is one of the biggest culprits. Lower the brightness manually whenever you can and turn on auto-brightness so it adapts to ambient light without you having to think about it.
2. Close or limit apps running in the background
Some apps keep consuming battery even when you're not using them, especially if they update data or use location continuously. Check Settings → Battery to see which apps consume the most and limit background activity for the ones you don't need to stay always active.
3. Turn on battery saver mode when you need it
Battery saver mode reduces consumption by limiting background tasks, animations and other secondary processes. Turn it on when you know you won't be able to charge your phone for a few hours, and you'll notice the percentage drops much more slowly.
4. Turn off bluetooth, location and mobile data when you're not using them
Keeping bluetooth, location or mobile data permanently on makes your phone use battery constantly searching for connections or updating your position. Turn them off when you don't need them and only turn them on when you're going to use them.
5. Keep your apps and operating system updated
Updates don't just bring new features or fix bugs: they usually improve the energy efficiency of apps and the system itself. Check every so often whether you have pending updates and install them to benefit from those improvements.
6. Avoid extreme temperatures
Intense heat and cold degrade the battery faster and can make it perform worse even in the short term. Avoid leaving your phone in the sun, inside a closed car, or exposed to very low temperatures for long periods.