Samsung M31S SM-M317 NFC Issue — NFC Not Working, Hardware Solution & Schematic Repair
Phuc Mobile
3 weeks
Samsung M31S SM-M317 NFC Not Working – Solution Map for Repair
The NFC (Near Field Communication) feature in Samsung M31S SM-M317 allows seamless wireless communication for payments, data transfer, and quick pairing with accessories. However, some users experience issues where Samsung M31S SM-M317 NFC stops working or becomes unstable. In this guide, we provide troubleshooting steps and a repair solution schematic to fix the problem.
Common Causes of Samsung M31S SM-M317 NFC Problems
- Software issues – corrupted system files, outdated iOS/Android firmware.
- Damaged NFC chip – caused by heat, liquid, or physical impact.
- Connector faults – loose or oxidized NFC antenna connectors.
- Motherboard damage – micro-cracks or short circuits affecting NFC lines.
How to Check Samsung M31S SM-M317 NFC Function
- Go to Settings → NFC (or Wallet/Payment apps) and toggle NFC on/off.
- Try scanning a tag, payment terminal, or NFC accessory.
- Use diagnostic apps or service menu codes to test Samsung M31S SM-M317 NFC hardware.
- If the feature is missing, the NFC module may be disconnected or faulty.
Repair Solutions for Samsung M31S SM-M317 NFC Not Working
When basic troubleshooting does not help, hardware repair may be required. Possible solutions include:
- Re-soldering or replacing the NFC IC chip.
- Cleaning and reconnecting NFC antenna flex cable.
- Checking schematic lines for shorts or open circuits on the motherboard.
- Replacing the back housing NFC antenna coil if broken.
Samsung M31S SM-M317 NFC Schematic Repair
Using the Samsung M31S SM-M317 NFC schematic diagram, technicians can trace the connection from the NFC chip to the antenna coil. By measuring voltage and continuity, it is possible to identify damaged components and replace them with original spare parts.
Conclusion
If your Samsung M31S SM-M317 NFC is not working, follow the basic troubleshooting steps first. For persistent issues, schematic repair is the best way to restore NFC functionality. Professional repair centers can perform IC replacement and board-level fixes to ensure Samsung M31S SM-M317 NFC works like new.
