1. Reason why iPhone drains battery even when idle and how to fix it
1.1. Forgetting to disable location services
The frequent activation of location services on the device is the reason why iPhone drains battery even when idle quickly and wastefully.
Disable it by following these steps:
Step 1: Access Settings.
Step 2: Choose Privacy section.
Step 3: Select Location Services and toggle it off.
Turning off location services will prevent iPhone from continuously tracking your location, thus consuming less battery.

1.2. Constantly Active Email Inbox
Ever wondered why iPhone battery drains so fast? To notify you of new messages, iPhone continuously checks your mailbox, which drains a lot of battery.
Reset your device to only check email when you access the app by:
Step 1: Go to Settings.
Step 2: Choose Mail, Contacts, Calendars.
Step 3: Select Fetch New Data. Then scroll down and tap on Manually.

1.3. Background Running Apps
Background apps also contribute to your hottest Apple iPhone draining rapidly. Remove the apps you seldom use in the multitasking bar. Press the Home button twice, then swipe each app card to close them.
1.4. Bright Screen Issue
Having a screen that's too bright can also drain your iPhone's battery fast. Swipe up from the bottom to adjust the brightness. Choose a moderate brightness level that helps you avoid eye strain while also conserving battery power effectively.

1.5. Activate Airplane Mode When Necessary
Airplane Mode isn't just for flying. If your battery is critically low, turn on Airplane Mode to disconnect from Wi-Fi, 3G, 4G, and cellular networks. This helps slow down battery drain.
Swipe up from the bottom and tap on the airplane icon to enable this feature.

1.6. Disable Automatic App Downloads
iPhone battery drains quickly because the device allows automatic app updates. However, frequent checks for updates can lead to rapid battery depletion. Prevent automatic app updates by:
Step 1: Choose Settings displayed on the screen.
Step 2: Select iTune & Appstore.
Step 3: Toggle off Update under the Updates section.
1.7. Refreshing Apps
Background App Refresh mode helps refresh apps but also consumes a lot of iPhone battery power. Turn off this feature with the following steps:
Step 1: Access the Settings menu.
Step 2: Proceed to General Settings.
Step 3: Choose Refreshing Apps in the background.
Step 4: Toggle this option to Off.
1.8. Notification Overload
Excessive notifications also drain iPhone battery even when not in use. You need to turn off notifications to minimize power consumption and avoid being bothered by unnecessary alerts through the following steps:
Step 1: Go to Settings.
Step 2: Choose Notification Center.
Step 3: Disable notifications for apps you deem unnecessary.

1.9. AirDrop Feature
This feature allows devices to send photos or videos... to nearby devices. Turn off this feature to save battery power.
Swipe up from the bottom and tap on AirDrop to disable the feature.
1.10. Reduce Motion Feature
This feature is also the answer to why iPhone batteries drain so fast? So if you feel it's unnecessary, you don't need to use it, so perform the operation to turn it off.
Step 1: Choose Settings.
Step 2: Access General Settings.
Step 3: Tap on Accessibility.
Step 4: Next, tap Reduce Motion.

1.11. Limit Spotlight Search
This feature is one that few people use, it's dubbed the battery killer because it constantly updates new information.
To turn it off, follow these steps:
Step 1: Navigate to Settings.
Step 2: Access General Settings.
Step 3: Select Spotlight Search.
Step 4: Proceed to remove unnecessary items in this section.
1.12. Limit Continuous Bluetooth Usage
For iPhone, Bluetooth is not very useful. To turn off this mode, simply swipe up from the bottom of the screen and tap on its icon. This will help you address the rapid battery drain of your iPhone.

1.13. Too Many Apps
You should only keep the apps you use regularly. For less-used apps, uninstall them to increase the battery life of your iPhone!
1.14. Neglecting Battery Boosting Accessories
You should invest in a power bank for the most convenient way to charge your phone, especially during long trips when a power bank is a must-have accessory.
2. 6 Most Effective iPhone Battery Saving Tips
2.1. Activate Low Power Mode
This mode is very useful for efficiently saving battery if your iPhone's battery drains quickly. When the battery is between 10% and 20%, the device will automatically prompt you to enable this mode. However, you can still enable this mode by going to Settings, selecting Battery, and turning on this mode.
2.2. Limit App Closures
If you think closing all apps will help you save battery, you need to rethink because restarting apps every time you open them will consume more battery power!

2.3. Reduce Background App Activity
Turn off unnecessary apps that constantly update information like Google Chrome, Drive, by going to Settings, selecting General, and tapping Background App Refresh, then turn off the app.
2.4. Disable Unnecessary Wireless Connections
Connecting to Wi-Fi or enabling 3G, 4G, and Bluetooth will consume a lot of power, so if you're not using them, you should turn off all these features!
2.5. Limit App Location Usage
Apps like Facebook, Zalo frequently request access to your location using Wi-Fi or 3G, 4G... This drains your iPhone's battery quickly, so turn it off to prevent unnecessary battery drain.
2.6. Reduce Auto-Lock Time
Leaving the screen on without using it will drain your iPhone's battery quickly. Reduce the auto-lock time by going to Settings, selecting General, then Auto-Lock, and setting the shortest time to mitigate fast battery drain.
Here are some small tips to help you maximize battery life, increase iPhone usage time, and minimize the issue of iPhone draining battery quickly. Share with your friends and family so they can apply these tips too! Don't forget to follow Mytour for more interesting information.
