Polar Tech OEM Battery Troubleshooting Guide

Polar Tech OEM iPhone Battery Diagnosis Troubleshooting Guide

(If you still see an error message, please follow these instructions)

1. Check Wi-Fi Connection

   • Make sure your Wi-Fi network is stable.

   • An unstable or weak signal can cause the diagnostic process to fail.

2. Check for Replaced Parts

   • Have you recently replaced any small components such as the Display nodule, earpiece module, vibration motor, or camera module? Using non-original or aftermarket parts (Like Screen, Earpiece, Camera) may cause the battery diagnosis to fail.

3. Check if the Screen Was Recently Replaced

   • If you replaced the screen within the last month, Apple’s backend system may detect it and temporarily block the diagnosis, In this case please try running the diagnosis again after one month. However the battery itself can still function normally.
     

4. Manually Enter Diagnostic Mode

   • If the screen has not been replaced but the diagnosis still fails:

     1. Power off the iPhone.

     2. Press and hold both Volume Up (+) and Volume Down (–) buttons (DO NOT release them and DO NOT press the Power button).

     3. While holding the buttons, plug in the charging cable (With Charger plug in).

     4. Once the Apple white logo appears, release both buttons.

     5. The iPhone will now enter diagnostic mode.

     6. Run diagnosis again 

5. If the Screen and Battery Were Replaced Together

   • When both parts are changed at the same time, the system may not correctly identify which one is under diagnosis

   • Example: If the screen passes the diagnosis, the battery may require up to one month before the system allows another test.

   • This does not affect normal battery performance.

6. If the First Diagnosis Fails

   • For the second attempt, follow these steps:

     1. Install a third-party battery first and power on the phone to trigger the battery error message popup window.

     2. Then reinstall the diagnostic battery and run the test again.

   • This resets the system and allows the second diagnosis to proceed successfully.

⚠️ If the Error Message Still Appears

If you still see the error message after completing all the above steps:

• Ensure you are using an original or Apple-certified battery.

• Double-check that the battery flex cable and connector are properly seated and undamaged.

• Try using a different stable Wi-Fi network and repeat the diagnostic process.

• If the issue persists, the system may still be recognizing a recent hardware change.
  → Please wait 30 days and re-run the diagnosis again.

• If the problem continues even after one month, contact us for further assistance.