Here are some ways to save battery on an iPhone:
- Lower the brightness of the screen
- Turn on Low Power Mode
- Turn off Background App Refresh
- Turn off Push Email
- Use Wi-Fi instead of cellular data when possible
- Keep your apps updated
- Use a simple wallpaper or turn off dynamic wallpapers
- Turn off Location Services or limit the apps that can access your location
- Turn off push notifications for apps you don’t use often
- Turn off AirDrop when not in use
- Keep your iPhone updated with the latest software
- Use Airplane mode when you don’t need internet connectivity
- Keep your phone cool by avoiding direct sunlight and high temperatures
- Use a case that has good thermal insulation or a built-in battery.