In today's time it's tough to go much longer than 24 hours without charging your smartphone. This shows better battery technology hasn't arrived yet, which means it's left to software and settings to eke out the limited power for as long as possible.
Phone, OS and even processor developers are all working to improve things in this area. The latest Qualcomm chips are more energy-efficient, and in the upcoming Android P there is an Adaptive Battery mode that limits how much power apps which you rarely use are allowed to consume.
You can boost your smartphone's battery life in some of the following ways.
The display consumes battery life at a devastating pace more than any other component of the phone. Most phones of today like Xiaomi(Redmi series), Samsung galaxy series include an auto-brightness feature that automatically adjusts the screen's brightness to suit ambient lighting levels.
In your phone's display settings menu, you should find an option labeled 'Screen Timeout', 'Sleep' or something similar. For an iPhone, look for Auto-Lock in the General settings menu. This setting controls how long the phone's screen stays lit after receiving input, such as a tap.
Set your timeout to the shortest available time. On most Android phones, the minimum is 15 seconds.
When you aren't playing music wirelessly or transferring media via bluetooth, turn off the Bluetooth in the settings. This way, you can add an hour or more to your phone's battery life.
In iOS it's easier to toggle Bluetooth and Wi-Fi on and off. Simply swipe up from the bottom of the screen to display the Control Centre and turn off the Wifi.
Turning ON battery saving mode will help you by turning on GPS, syncing process and will limit the background process and thereby you can experience increase in battery life. In the latest MI Redmi 4/ Redmi 4A/ Redmi Note 4/ Redmi 5A handset updates you will see this option in quick toggle settings. You need to just pull down the notification panel and TURN ON battery saver.
Multitasking - the ability to run more than one app at a time - is a powerful smartphone feature. It can also burn a lot of energy, because every app you run uses a share of your phone's processor cycles.
In Android, tap the multi-tasking button - usually the right-most of the three icons at the bottom of the screen - and you can swipe away apps to close them.
In iOS, double-tap the Home button so the multitasking screen appears, then swipe upwards to close the app.
Unfortunately, vibrating consumes much more power than playing a ringtone does.
Applications often get updated to use less battery power, so you should update the apps from the store.