A blinking wireless charger is usually a sign of a charging problem. Updated:. The most common causes are a weak power adapter, poor phone alignment, a thick or magnetic case, a foreign object, overheating, or an incompatible phone. Unplug the charger for 30 seconds before testing the fixes below.
The light code depends on the charger's brand and model, so there is no universal meaning for a blinking light.
Try These Fixes in Order
1. Reconnect the Charger to a Suitable Power Adapter
Unplug the wireless charger from the wall, wait about 30 seconds, and reconnect it securely.
Use the power adapter and cable recommended by the manufacturer. A low-power adapter, damaged cable, computer USB port, or loose connection can cause unstable power and a flashing indicator. Some wireless chargers need more power than a basic 5V/1A USB adapter can provide.
If possible, test the charger with:
- A different wall outlet
- A different compatible cable
- The manufacturer's original power adapter
- A USB-C wall adapter with the wattage listed in the charger manual
2. Reposition the Phone in the Centre
Place the phone in the centre of the charging pad with the screen facing upward.
Wireless charging depends on the alignment between the coil in the phone and the coil in the charger. Poor alignment can cause intermittent charging, slow charging, or no charging. Vibrations or phone notifications may also move the phone out of position.
A MagSafe charger should align with the phone's magnets automatically. With a flat Qi charger, move the phone slightly until the charging symbol appears.
3. Remove the Case and Accessories
Take off the case and test the phone directly on the charger.
These items can interfere with wireless charging:
- Thick or rugged cases
- Metal plates
- Magnetic mounts
- Wallet cases
- Credit cards or access cards
- Pop grips and other bulky attachments
- Battery cases
- Coins or other metal objects
Apple recommends removing thick, metal, or battery cases when an iPhone charges slowly or does not charge. Samsung also warns that foreign objects and some third-party accessories can interfere with wireless charging.
4. Check That the Phone Supports Wireless Charging
Not every phone supports Qi wireless charging, and one charger may not support every wireless charging standard or device type.
Check the phone's specifications for one of these terms:
- Qi wireless charging
- Qi2 wireless charging
- MagSafe charging
- Wireless PowerShare, for compatible Samsung devices
If the phone does not support wireless charging, the charger may blink because it cannot establish a compatible connection.
5. Let the Phone and Charger Cool Down
Wireless charging may slow down or stop when the phone or charger becomes too hot.
Remove the phone from the charger and let both devices cool at room temperature. Do not charge under a pillow or blanket, or in direct sunlight. Avoid gaming, video streaming, and other intensive use while testing the charger because the phone may use power as quickly as the charger supplies it.
6. Disconnect Other Charging Connections
Disconnect any wired USB cable or other accessory connected to the phone.
Some phones give priority to wired charging or limit wireless charging while a cable is connected. Apple states that an iPhone connected to USB charges through the USB connection rather than wirelessly. Samsung also recommends disconnecting wired accessories when troubleshooting wireless charging.
What Does the Blinking Light Mean?
The blinking light usually points to a power problem or an issue between the phone and the charger. The exact meaning depends on the charger model.
| What you observe | Most likely cause | What to do |
|---|---|---|
| The charger blinks as soon as it is plugged in | Insufficient or unstable power | Use the recommended wall adapter and cable |
| The charger stays steady until you place the phone on it, then starts blinking | Misalignment, a case, a metal object, or an incompatible device | Remove the case and reposition the phone |
| The phone charges briefly, then stops | Movement, overheating, or intermittent power | Keep the phone centred, let it cool, and replace the cable if necessary |
| The charger blinks with no phone on it | A power, cable, adapter, or charger fault | Try another outlet and compatible adapter |
| Only one battery-pack light blinks | The wireless battery pack may have too little charge | Recharge the battery pack before connecting the phone |
| The charger works with another phone | The original phone, case, software, or charging coil may be causing the problem | Test the original phone without accessories and restart it |
Compare the charger with another compatible phone if you can. If it blinks with every device, the charger or its power supply is more likely to be defective. If it works with another phone, focus on the original phone, its case, alignment, and temperature. This is a troubleshooting inference based on manufacturer testing guidance.
Restart the Phone and Wireless Charger
Restart the phone, then unplug and reconnect the wireless charger. A temporary software or charging-control error can prevent the phone from accepting power.
After restarting, run one clean test:
- Remove the phone case.
- Disconnect wired accessories.
- Place the phone in the centre of the charger.
- Use the recommended wall adapter.
- Check whether the phone begins charging.
When Should You Replace the Wireless Charger?
Replace the charger or contact the manufacturer if it continues blinking after you have:
- Tried another compatible power adapter
- Tried another cable and wall outlet
- Removed the case and accessories
- Tested a second Qi-compatible phone
- Confirmed that the charger receives the required input power
- Allowed the phone and charger to cool
Stop using the charger if it becomes unusually hot, smells burnt, shows visible damage, or has a frayed cable.
If a different wireless charger works normally with the same phone and power adapter, the original charger is likely faulty.