When an iPhone X stops charging wirelessly but still works with a Lightning cable, the wireless charging coil is the most likely fault. The coil sits between the battery and the back glass, making it vulnerable to drops, liquid, and heat. Replacement is straightforward once the back glass is accessible.
Symptoms Pointing to the Coil
- Works on cable, not on Qi pad
- Wireless charging starts then stops repeatedly
- Heat buildup on the back glass during attempted wireless charging
- Visible scorch marks on the coil through a cracked back
Replacement Steps
- Remove the back glass using a laser or heat method.
- Peel away the damaged charging coil, taking care not to tear the flex cable.
- Clean the adhesive residue from the battery and frame.
- Apply new adhesive tape and seat the replacement coil.
- Route the flex to the logic board connector and test before re-gluing the back glass.
| Tool | Purpose |
|---|---|
| Laser separator | Remove back glass without frame damage |
| Plastic spudger | Lift old coil without puncturing battery |
| Isopropyl alcohol 99% | Clean adhesive residue |
Parts and Related Components
- iPhone x parts collection
- iPhone replacement batteries
- iPhone charging ports
- iPhone camera modules
- speakers and haptic motors
- iPhone flex cables
- SIM card trays
Testing
Place the device on a known-good Qi charger. A healthy coil draws about 5-7.5 watts initially and warms gently. Excessive heat or no current indicates a bad connection or defective coil.
Frequently Asked Questions
Can I replace the coil without removing the back glass?
No. You need access to the coil surface.
Does a new coil need calibration?
No. Qi charging is hardware-only on the iPhone X.
Will a cracked back glass affect wireless charging?
Yes. Cracks can create air gaps that reduce coupling efficiency.
ScrnFix Team supplies wholesale iPhone replacement parts for repair shops and distributors worldwide. Browse our collections for consistent stock, fast shipping, and tested quality grades.