According to Apple: Step by step instructions to Maintain 100% iPhone Battery Health...

 

Apple has tips for iPhone clients on the best way to maximize battery life and life expectancy.

Apple normally offers great battery existence with its gadgets be it iPhone, iPad, Mac, Apple Watch models, or others. In any case, previously, Apple has been blamed for deliberately hindering iPhone models with maturing batteries, and it recently paid $113 million (generally Rs. 819 crores) to settle the BatteryGate case. While Apple accepts this was to save battery wellbeing over long-term use, it has from that point forward presented battery and performance management highlights to users, aside from sharing tips and proposals to keep up battery wellbeing. A portion of the overall practices that Apple prescribes incorporate refreshing to the most recent programming, keeping away from high encompassing temperatures, eliminating certain cases while charging, and putting away gadgets in a half-charged state while putting away them over significant stretches. 

Apple on its site has a page specifying how to expand the battery life and life expectancy of your iPhone. The principal thing is to keep it refreshed to the most recent software.

TIPS:

Update your iPhone:

1.On your iPhone, go to Settings. 

2.Tap on General. 

3.Tap on Software Update. 

4.You should see the accessible update here. In the event that you do see an update, tap on it and your iPhone will begin updating. Ensure you have adequate battery left. 

5.On the other hand, you can plug your iPhone into your PC and update it with the most recent variant of iTunes.

You can also preserve your battery life by adjusting your screen brightness and using a Wi-Fi connection wherever possible. You can either dim your iPhone's screen brightness or turn on auto brightness.

Dim display brightness or turn on auto brightness:

1.Open Control Center. 

2.Drag brightness slider to the base. 

3.To initiate auto brightness, head to Settings. 

4.Tap on General. 

5.Tap on Accessibility. 

6.Tap on Display Accommodations. 

7.Set Auto-Brightness to On.

Enable Low Power Mode:

1.Go to Settings.

2.Scroll down and tap on Battery. 

3.Flip the Low Power Mode to On.

Prevent apps from refreshing in the background scenes:

1.Go to Settings. 

2.Tap on General. 

3.Tap on Background App Refresh. 

4.Select Off to kill Background App Refresh totally. 

Turn off location services for applications:

1.Go to Settings. 

2.Tap on Privacy. 

3.Tap on Location Services. 

4.Here you will see a rundown of applications utilizing location services with an off switch.