iPhone のバッテリー残量が 1 パーセントで止まった場合の修復方法は?

An iPhone stuck at 1 percent battery life is more than just a minor inconvenience—it can be a frustrating issue that disrupts your daily routine. You might plug in your phone expecting it to charge normally, only to find it stays at 1% for hours, reboots unexpectedly, or shuts off entirely. This problem can affect your ability to make calls, send messages, or access essential apps. Understanding the reasons behind this issue and how to fix it can help you regain control of your device without unnecessary stress or expensive repairs.

In this guide, we’ll explore the common reasons why your iPhone might be stuck at 1%, and walk you through step-by-step solutions to resolve the issue.

1. Why Is My iPhone Stuck at 1 Percent?

Before diving into solutions, it’s important to understand the potential causes behind the problem. Your iPhone showing 1% indefinitely may be caused by:

• Battery Calibration Issues

Over time, your iPhone’s battery may fall out of sync with its operating system, leading to inaccurate readings. Even if the battery is charged beyond 1%, iOS might not reflect that correctly.

• Faulty Charging Accessories

A damaged Lightning cable, adapter, or even a dirty charging port can prevent your iPhone from charging properly, causing it to stay at a low battery percentage.

• ソフトウェアの不具合またはバグ

iOS bugs or app malfunctions can interfere with battery reporting. An outdated or corrupted version of iOS may cause the phone to inaccurately display the charge level.

• Battery Health Degradation

If your iPhone is old or has been heavily used, the battery’s health might be poor. In this case, it may not hold a charge properly or report incorrect percentages.

• Background Apps or Settings

Background apps that drain power aggressively or problematic system settings might cause the device to draw more power than it receives, resulting in a battery level that appears “stuck.”

2. How to Fix iPhone Stuck at 1 Percent?

If your iPhone remains stuck at 1% battery even after charging for a long time, try the following step-by-step solutions:

2.1 Force Restart Your iPhone

A force restart can eliminate temporary system glitches that may prevent the battery percentage from updating.

2.2 Inspect Your Charging Cable and Adapter

Charging problems often arise from damaged cables, faulty adapters, or debris in the charging port. Ensure you’re using an Apple-certified Lightning cable and adapter. Use a soft brush or compressed air to carefully remove any dust or lint from the charging port. If charging still fails, try using a different cable or adapter to check for faulty hardware.

2.3 最新のiOSバージョンにアップデートする

Apple often fixes software bugs related to battery display through iOS updates.

向かう 設定 > 一般 > ソフトウェアアップデート . When an update appears, tap ダウンロードとインストール to get the newest iOS on your device.

2.4 すべての設定をリセット

Incorrect or corrupt settings can sometimes interfere with how the battery status is reported.

You can reset all system settings without deleting data by navigating to Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings. This will reset Wi-Fi, Bluetooth, display, and other system settings without erasing your personal data.

2.5 Calibrate the Battery

Battery calibration helps align the battery percentage reading with the actual battery capacity.

• Use your iPhone until it powers off by itself (0%).
• Charge it to 100% without interruption , preferably overnight.
• Keep it plugged in for an extra hour after reaching full charge.
• Unplug and use your iPhone normally. Observe if the battery percentage updates properly.

2.6 Restore via iTunes or Finder

If you’re comfortable performing a more advanced fix and have a backup:

• Connect your iPhone to a computer with iTunes (Windows/macOS Mojave) or Finder (macOS Catalina and newer).
• Select your iPhone in iTunes or Finder, click Restore iPhone, and follow the on-screen prompts to complete the process.
• This erases the device and reinstalls iOS, which can fix deeper software issues—but will remove your data unless backed up.

3. Advanced Fix iPhone System Stucks with AimerLab FixMate

If your iPhone remains stuck at 1% despite trying all basic troubleshooting steps, AimerLab FixMate offers a reliable and safe solution. It’s a powerful iOS system repair tool designed to fix over 150 iOS issues without data loss, such as:

• iPhone stuck on Apple logo
• Black/white screen
• iPhone boot loop
• Frozen screen
• And of course, battery percentage errors

Whether you’re using an older iPhone or the newest iPhone 15 running iOS 17, FixMate ensures full compatibility across all iOS devices and versions.

Follow these steps to fix your iPhone stuck at 1% battery using AimerLab FixMate:

• Head over to AimerLab’s official website and get the Windows version of FixMate.
• Connect your iPhone to your PC via USB; the software will detect it automatically.
• Select “Standard Mode” to start, and FixMate will prompt you to download the correct firmware for your device.
• After the firmware is downloaded, FixMate will begin repairing the battery-related problems.
• After the repair, your iPhone should display the correct battery percentage and charge normally.

4. 結論

An iPhone stuck at 1 percent can be alarming, especially if it doesn’t respond to charging or restarts. The root causes may vary, from minor software glitches to deeper system errors or battery health problems. While basic fixes like force restarting, checking cables, and updating iOS can resolve the issue in many cases, they may not always be enough.

For a guaranteed, advanced solution, AimerLab FixMate is your best bet. With its easy-to-use interface, zero data loss, and high success rate, FixMate offers a one-click fix to restore your iPhone’s battery function quickly and safely.