Reverse Charging Not Working? 10 Fixes for Android Phones
Your phone's battery is meant to be a power bank in a pinch, topping up earbuds, a smartwatch or a friend's phone. When reverse charging does nothing, the cause is usually a setting, a battery threshold or a misaligned device, not a hardware fault. Here is how to find it.
What is reverse charging?
Reverse charging lets your phone send power to another device instead of receiving it. There are two kinds:
- Reverse wireless charging: You place a device on the back of your phone and it charges through the phone's Qi coil. Samsung calls it Wireless PowerShare, Google calls it Battery Share, and other brands use names like Reverse Wireless Charging.
- Reverse wired charging: You connect a cable from your phone's USB-C port to another device, which draws power from your phone (often called OTG charging).
Both are low-power by design, usually a few watts, so they are best for emergencies and small devices like earbuds and watches.
Check the basics first
1. Make sure your phone supports it
Not every phone can do this. Many budget and older models have no reverse charging at all, and iPhones do not support reverse wireless charging. Check your phone's spec page or the Battery settings menu for a reverse charging option.
2. Turn the feature on
Reverse charging is off by default on most phones. On Samsung Galaxy phones, open the Quick Settings panel and tap Wireless power sharing, or go to Settings → Battery → Wireless power sharing. On Pixel phones, go to Settings → Battery → Battery Share and switch it on. Other brands usually place it under Battery or Additional settings.
3. Keep your battery level high enough
To protect itself, your phone stops sharing power when its own battery runs low. Thresholds vary by manufacturer and model, and are commonly around 20 to 30 percent. If the feature greyed out or stopped suddenly, plug your phone in or charge it before trying again.
4. Turn off Battery Saver
Power saving modes often disable reverse charging completely. Switch off Battery Saver or Power Saving mode, then try again.
Fixes for reverse wireless charging
5. Line up the coils
Place the other device's charging area against the center of your phone's back panel. Phones that support reverse wireless charging usually have the coil in the middle or upper half, so try small adjustments. A watch or earbuds case should sit flat and still. If your phone vibrates and the charging icon appears on the other device, you have found the spot.
6. Remove cases and accessories
A thick case on either device can block the signal. Metal plates, magnets, wallets and ring holders are especially likely to interfere. Remove the cases from both devices and test again.
7. Confirm the other device accepts wireless charging
The receiving device must support Qi wireless charging. Some earbuds cases and watches use proprietary charging methods and will not charge from a phone. Check the other device's manual to confirm.
8. Let the phone cool down
Reverse charging creates heat, and phones will shut it off if they get too warm. Move to a cooler place, take off the cases and avoid using the phone heavily while sharing power.
If either device becomes very hot, swells or smells strange, stop immediately and unplug everything.
Fixes for reverse wired charging
9. Use the right cable and settings
Use a good-quality USB-C cable, preferably one that supports data and power. When you connect another device, a pop-up may ask you to choose the USB mode. Pick the option that lets your phone supply power, and if you do not see it, check Settings → Connected devices → USB. Some phones only supply power to certain device types, so a cable that charges earbuds may not charge another phone.
10. Restart and update
A restart clears temporary glitches, and updates often fix charging bugs. Install the latest system update, restart both devices and try again. If it still fails and the feature is listed as supported on your model, contact the manufacturer or an authorized service center, since a damaged coil or charging port may be the cause.
Brand-specific notes
| Brand | Feature name | What to check |
|---|---|---|
| Samsung Galaxy | Wireless PowerShare | Enabled in Quick Settings, Battery Saver off, phone above its minimum battery level, cases removed |
| Google Pixel | Battery Share | Turned on in Battery settings, Battery Saver off, battery above its minimum level, devices aligned |
| Xiaomi, Huawei, Oppo and others | Reverse wireless charging | Feature listed under Battery or Additional settings, supported on your model, receiving device uses Qi |
| iPhone 15 and later | USB-C accessory charging | No wireless reverse charging; use a USB-C cable to power AirPods or an Apple Watch at low speed |
Tips to get the most out of reverse charging
- Use it for small batteries such as earbuds and watches, since phone-to-phone charging is slow
- Expect a loss of power: reverse charging is less efficient than charging from a wall adapter
- Plug your phone into a charger while sharing if you need to keep your own battery up
- Keep both devices still until charging is done
Frequently asked questions
Why is reverse charging not working on my phone?
Check that your phone supports it, the feature is switched on, Battery Saver is off, your battery is high enough, and the devices are aligned without thick cases between them.
How much battery do I need for reverse wireless charging?
It depends on the phone. Manufacturers set a minimum level, commonly around 20 to 30 percent, below which sharing stops. Keep your phone comfortably above that.
Does the iPhone support reverse wireless charging?
No. iPhone 15 and later can send a small amount of power to accessories such as AirPods or an Apple Watch through the USB-C port with a cable.
Why does reverse charging keep stopping?
Usually the phone is overheating, the battery has dropped below the sharing threshold, or the other device has slipped out of position.
Is reverse charging bad for my battery?
Occasional use is fine, but it is inefficient and produces heat. Treat it as an emergency feature rather than a daily habit.
The bottom line
When reverse charging is not working, start with the simple checks: confirm your phone supports it, turn it on, turn off Battery Saver, keep your battery up, remove cases and line up the coils. If it still fails, update the software, try another device, and contact the manufacturer if the feature is meant to work on your model.
