1. Check Your Battery’s Health
If your battery health is bad, Apple will tell you about it when you go to Settings -> Battery. But this only happens when the battery health goes below 80%.
If you have a Mac, you can check your iPhone’s battery health at any time using the CoconutBattery app. If it’s below 80%, you may want to go to the local Apple store or a service station and get the battery replaced.
2. Reduce Brightness
Open Control Center and reduce the brightness. If possible, dim the screen completely. Try not to use full brightness at all times. Over time, this will reduce the stress on your battery.
3. Use Auto Brightness
If you’ve disabled Auto Brightness, enable it again from Settings -> General -> Accessibility -> Display Accommodations. This feature makes sure that the brightness level corresponds to the environment you’re in. So when you’re in your house or workspace, the brightness will be reduced automatically and you’ll end up saving battery life.
4. Reduce Auto-Lock Time
Auto-Lock feature automatically turns off the screen (and locks your phone) when you’re not actively using it. Go to Settings -> Display & Brightness -> Auto-Lock and choose the 30-seconds option. This way, your phone won’t unnecessarily use the battery when you’re looking at it.
5. Use Wi-Fi When Possible
Wi-Fi uses way less energy than cellular radio. When possible, try to use Wi-Fi instead of Cellular data. From Control Center, tap on the Wi-Fi toggle to turn on the feature.
6. Use Low Power Mode
iOS prompts you to enable Low Power Mode when your phone hits 20%. You can turn it on manually right after fully charging your phone. Low Power Mode saves energy by disabling background processes and throttles your CPU to deliver more battery life.
When you use Low Power Mode, you’re not pushing the battery at all times. This reduces the chances of degrading your battery quickly.
7. Don’t Use iPhone in Extreme Temperatures
iOS devices function best between 32° to 95° F (0° to 35° C). Extreme cold and heat might affect the battery negatively and it might degrade faster.
8. Tips for Storing iPhone for Long Term
When you’re going to store your iPhone for a long time, Apple recommends you only charge it till 50%. Don’t keep the iPhone idle for a long time with a full charge or a zero charge. If the battery is fully charged, you might end up shortening the battery life. If the battery is empty, it might fall into deep discharge state which renders it incapable of holding a charge.
9. Charging Tips
A Lithium-ion battery’s health depends on how it was charged. Heat and overcharging degrade iPhone’s battery life. If you’re using a thick rugged case, or a battery case, make sure you remove it when charging the phone. Because these cases are bulky, they trap in the heat, which is not good for the battery.
Also, try using slow chargers. While you can use a 29W MacBook charger on your iPhone to charge it faster (the difference isn’t that big either), it’s best to use the 5W charger that came with the iPhone. If you’re charging your phone overnight, the speed difference won’t matter.
You should also avoid leaving your iPhone in the car while running errands as the interiors of the car can get very hot if it is a sunny day, which can negatively impact its battery.
10. Other Tips
Make sure you’re not running betas on your phone and avoid installing the first release of a new iOS version. Usually, the bugs get squashed in a couple of weeks after release. Disable Background App Refresh and location access for apps that don’t need it.
Related article: How to Make iPhone Ringtones
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