How to Fix Decreasing Battery While Charging iPhone 12?

Decreasing Battery While Charging iPhone 12?

Is your iPhone 12 battery decreasing while it charges? This situation can become frustrating because the battery will remain empty despite being plugged into the charger.

5 Reasons Why My iPhone 12 Battery Decreasing While Charging?

Here are the common reasons.

1. Background Apps Running Continuously

The first and most common reason for the battery’s decrease is several apps running in the background. These apps consume power even if you are not using them, making your iPhone 12 unable to charge properly.

2. A Defective Charging Cable and Adaptor

The second reason for the battery decrease may be that your charging adaptor and cable are defective, leading to battery drain while charging. They will not adequately supply power to the iPhone 12. You should plug the charger into different wall outlets to check for defectiveness.

3. Increased Screen Brightness

Sometimes, you increase the screen brightness to perform a task on your phone. However, you might need to remember to turn it down while charging. This causes your iPhone 12 to charge slower and decrease battery while charging iPhone 12. Make sure to reduce the screen brightness during charging.

4. Run Multiple Tasks at Once

Experts have never recommended using an iPhone while it is charging. However, sometimes, circumstances occur that make using the device inevitable. You also run multiple apps on your phone, which strains the battery and decreases fast.

5. Software Glitches and Bugs

Suppose you have eliminated all the above reasons, and your battery is still decreasing. In that case, the only explanation is that your iPhone has a software glitch or is being attacked by Malware or a virus. Incompatible apps, incomplete software updates, and corrupted system files can cause this.

7 Steps to Take to Fix the Decreasing Battery While Charging

After learning about the reason, you should focus on solutions for the iPhone 12 battery issue. You should start by restarting your phone and performing a factory reset. Here are the troubleshooting steps you can take. If you encounter difficulties or the issue persists, consider seeking professional iPhone repair for further assistance.

1. Restart Your iPhone 12

The simplest solution is to restart your iPhone. This might help eliminate software glitches, viruses, and bugs.

  • First, you should press and hold the button on the side.
  • A slider will appear on the screen.
  • Drag it to turn the iPhone off.
  • To turn on the phone, press the side button again.

2. Inspect the Charging Cables and Accessories

The second iPhone 12 battery troubleshooting step is to check the wear and tear of the charging cable, adaptor, and wireless charger. If you notice signs like a tear or other physical damage, you should immediately replace it. Also, ensure you buy a genuine charger and accessories.

3. Update the iOS of Your iPhone

Sometimes, iPhone users ignore the update notification because they need more time to complete the process. However, updating the iOS will fix bugs and software glitches to improve your iPhone’s performance.

  • Firstly. Go to Settings.
  • Then, select General.
  • Reach the Software Update option.
  • If an update is available, download and install it to fix iPhone 12 battery-decreasing problems.

4. Check the Phone’s Battery Health

  • In your iPhone Settings, look for Battery and select Battery Health to check battery health after a reset.
  • You should check the Maximum Capacity and Peak Performance Capability. If the capacity is below 80%, consider replacing the battery.

5. Disable the Power-Consuming Apps

Some apps consume more battery power than others. Managing them should be a great way to prevent battery depletion while charging.

  • To turn off the apps, go to Settings and search for Battery.
  • Take a look at the list of apps and turn off background activity for unnecessary apps.

6. Reset Your iPhone’s Settings

Resetting your iPhone’s settings can help fix decreasing battery while charging iPhone 12.

  • To reset your device, go to Settings.
  • Select General, and then Reset.
  • Lastly, choose Reset All Settings.

This action will reset all settings to default values, but your data and media will remain intact.

7. Restore the Factory Settings

You can restore your iPhone to factory settings to address persistent issues with battery drain while charging. This will erase all data and settings on your device, so be sure to back up your data beforehand.

  • In your iPhone 12, go to Settings.
  • Select General and then Reset.
  • You must choose Erase All Content and Settings.
  • Follow the on-screen instructions to complete the process.


Learning how to fix decreasing battery while charging iPhone 12 is essential to improve your device’s performance. The solutions include simple restarts and more advanced resets. They fix various potential causes, such as software glitches, faulty accessories, and battery problems. If the problem persists after these steps, consider contacting Apple Support and third-party repair shops like SD CELLPLUS for further assistance and troubleshooting.

Frequently Asked Questions

Why is my iPhone battery getting lower while charging?

Your iPhone 12 battery may decrease while charging. This can happen due to wrong cables, software bugs, background apps, or battery issues.

How do I fix my iPhone 12 charging problem?

To fix the decreasing battery while charging the iPhone 12, restart your phone, check and replace faulty cables, update iOS, close power-hungry apps, and reset or restore factory settings if necessary.

How do I get my iPhone 12 to charge faster?

To charge your iPhone 12 faster, use an Apple-certified fast charger. Also, enable Airplane Mode and avoid using the phone while charging. Keep the device at a moderate temperature.