Here are few suggestions to extend phone battery life:

• Black wallpaper can save battery
• Use dark themes and settings
• Don’t use adaptive/auto brightness
• Keep screen timeout shorter
• Turn off vibrate and haptic feedback
• Only use original batteries
• Set ‘Do Not Disturb’ or ‘sleep’ schedule when you are sleeping
• You don’t need to be connected 24/7
• Don’t use too many widgets
• Don’t let your apps fall behind the times
• Use your basic battery saving mode
• Never ever fall into the auto-sync trap, keep it manual
• Manually update apps when it’s convenient for you
• Don’t be so mobile obsessed