Keep your iPhone software up to date with the most recent version. Apple frequently releases software upgrades that include sophisticated energy-saving technology to improve a device's performance and usefulness. It is important that you maintain your device software up to date to guarantee that you do not lose out on new features.

1.  Connect your iPhone to a power supply.
2. Wi-Fi allows you to connect to the Internet.
3. Go to the Settings tab.
4. Select the General option.
5. Tap Software Update to see what upgrades are available.
6. Tap Download and Install if an update is available.
7. If you're requested to uninstall applications temporarily to make room for the upgrade, choose Continue or Cancel.
8. To finish the game, follow the onscreen instructions.

While charging, remove the phone case. When you charge a gadget while it's within a case, it might create a lot of heat. This may have an impact on the battery's capacity. When you charge your smartphone, it gets hot. This is an indicator that you should remove the case.

If you don't use it for a long time, keep it half-charged. If you aren't going to use your iPhone for a long time, Apple suggests leaving it half-charged. This suggests that the device's battery should be charged roughly 50%. Keep in mind that the ambient temperature and the percentage of charge on the battery, while it's shut down for storage, will have an impact on the overall health of your battery.