Charging is in progress, but the phone is not charging: all reasons and solutions for Android

You connected your smartphone to the charger, a lightning bolt or battery icon appeared on the screen, but the battery percentage does not increase - or even drops. The situation is familiar to many owners Androiddevices, from budget Redmi to flagship Samsung Galaxy. What's the matter: is the cable, connector, firmware or battery itself to blame? We have collected all possible causes and proven diagnostic methods - without unnecessary “reboot the device” and template advice.

It is important to understand: charging indicator on the screen does not always mean that current is actually flowing into the battery. Sometimes this is simply a system reaction to being connected to a power source, and sometimes it is a symptom of a serious malfunction. In the article, we will look at how to distinguish a software failure from a hardware defect, when you can handle it yourself, and when it’s time to take the phone to a service center.

We’ll warn you right away: if your Android discharged “to zero” and does not respond to charging at all (there is not even an indicator), this is another problem - read our instructions for restoring “dead” smartphones. Here we will talk specifically about cases when there is a charging icon, but the battery percentage does not change.

1. Problems with the cable or charger

Start with the simplest: 90% of "false" charging problems related to the cable, adapter or socket. Even if you are using the original kit, it may have failed. Here's how to check:

• 🔌 Try a different cable and power supply. The best ones are original ones from your smartphone or certified ones (for example, with marking USB-IF). Cheap "no-name" cables often have thin wires that overheat and interrupt the current.
• 🔍 Inspect the cable for physical damage. Pay special attention to the places near the connectors - this is where the insulation most often frays. If you see exposed wires, the cable must be replaced.
• 📱 Connect the charger to another device. If the second smartphone or tablet charges normally, the problem is not with the adapter.
• 🔄 Change the socket or USB port. Sometimes it is not the power supply itself that is to blame, but a faulty socket or ports on the computer/power bank.

Pay attention to power supply power. Modern smartphones (for example Samsung Galaxy S23 or Xiaomi 13require chargers that support Quick Charge, Power Delivery or similar technologies. If you use a weak adapter (for example, from an old phone on 5W), the phone may “think” that it is charging, but in reality the current barely covers self-discharge.

Critical moment: if when you connect the charging phone heats up in the connector area, this is a sign of a short circuit in cable or adapter. Immediately disconnect the device and check the components!

2. Contamination or damage to the USB-C/Micro-USB connector

The charging connector is one of the most vulnerable points of a smartphone. Dust, pocket lint, moisture or mechanical damage can cause contact problems. In this case, the phone will “see” the charging connection (therefore the indicator lights up), but no current will flow into the battery.

How to check and clean the connector:

⚠️ Attention: never use metal objects (needles, paper clips) for cleaning - they can short-circuit the contacts! If the connector is deformed (for example, after a fall), do not try to straighten it yourself - this may lead to a short circuit.

On some models (for example, Samsung Galaxy A-series or Huawei P-smart) the USB-C connector has additional contacts for data transfer. If they have oxidized, the phone may detect charging, but not charge. In this case, it will help cleaning with alcohol:

1. Dip a cotton swab in isopropyl alcohol (90%+).
2. Gently wipe the contacts with connector (do not press hard!).
3. Let it dry for 10-15 minutes before connecting the charger.

If the problem remains after cleaning, it may be the connector departs from the board. This is a common malfunction after falls or strong impacts. In this case, only replacing the connector at a service center will help.

3. Battery malfunction: how to check without disassembly

Lithium-ion and lithium-polymer batteries degrade over time - even if you use the phone carefully. After 300–500 charging cycles, the battery capacity may drop by 30–50%, and the power controller will not correctly determine the charge level. As a result, you will see a charging indicator, but the battery percentage will not change.

Signs of a “dying” battery:

• 🔋 The phone discharges in a few hours even in standby mode.
• 📉 The charge percentage jumps (for example, from 30% immediately to 1%).
• 🔥 The phone case gets very hot when charging.
• ⚡ Charging occurs only when turned off.

How to check the battery status without disassembling the phone:

1. Install the application AccuBattery (available in Google Play). It will show the actual battery capacity and discharge rate.
2. Run the test in Settings → Battery → Battery status (available on Samsung, Xiaomi, OnePlus etc.).
3. Look at the battery life: if it has decreased by 2-3 times compared to the new phone, it’s time to change the battery.

⚠️ Attention: if the battery is swollen (the phone body has become a “belly”), immediately turn off the device and do not use it! Swollen batteries can ignite or explode. In this case, an urgent replacement is required at the service.

What to do if the phone does not turn on after replacing the battery?

If after replacing the battery the phone does not respond to charging, check:

1) Correct connection of the battery cable to the motherboard.

2) Compatibility of the new battery with the phone model (even if “similar”, it may not fit).

3) The presence of a protective film on the battery contacts (it must be removed before installation).

If everything is correct, but the phone does not turn on, the power controller settings may have gone wrong - firmware or diagnostics is required in the service.

4. Software failures: from cache to firmware

Sometimes the phone does not charge due to errors in the system. This could be:

• 🗑️ Damaged cache of applications responsible for power management.
• 🤖 Error in the service BatteryStats (responsible for displaying the charge level).
• 📱 Incorrect settings energy saving (for example, in MIUI or EMUI).
• 🔄 Failure after updating the firmware.

How to fix software errors:

1. Clear the system cache:
   1. Go to Settings → Memory → Cached data.
   2. Click "Clear cache."
2. Reset battery settings (relevant for Samsung, Huawei, Xiaomi):
   1. Open Settings → Device care → Battery.
   2. Tap on the three dots in the upper right corner and select "Reset settings."
3. Disable battery optimization for system applications:
   1. Go to Settings → Applications → Three dots → Special access → Battery optimization.
   2. Find applications like Android System or Google Play Services and disable optimization for them.
4. Update firmware:
   1. Check for updates in Settings → System → Software update.
   2. If an update is available, install it (preferably with a charge of at least 50%).

If the problem appeared after updating the firmware, try roll back to the previous version. To do this:

1. Download the official firmware for your model from the manufacturer's website (for example, Xiaomi — en.miui.com, Samsung — samsung.com).
2. Install it via Recovery Mode (press Power + Volume Up with the phone turned off).

⚠️ Attention: rolling back the firmware can lead to loss of data. First make a backup via Settings → System → Backup.

5. Problems with the power controller or motherboard

If all the previous steps did not help, the reason may lie. in hardware malfunction:

• 🔧 The charging controller is damaged (often fails after power surges).
• 🔥 Circuit elements have burned out power supply on the motherboard (for example, after moisture).
• 🔌 The connector contacts have come loose from the board (soldering required).

How to diagnose a hardware failure:

Symptom	Probable cause	Solution
The phone charges only when it is turned off	The power controller or UEFI firmware is faulty	Flashing or replacing the controller
Charging is jerky (it goes, then stops)	Poor contact of the connector with the board or oxidation of the tracks	Soldering the connector or replacing the cable
The phone gets very hot when charging, but does not charge	Short circuit in the circuit power supply	Diagnostics of the board in the service
Charging comes only from the original cable	Failure in the accessory identification chip	Flashing or replacing the chip

It is not recommended to repair the board yourself without experience - you can permanently damage the phone. However, you can do it. primary diagnostics:

1. Connect the phone to the computer via USB. If it is detected as a device, but does not charge, there is a problem in the power circuit.
2. Try charging the phone from PC USB port. If charging is ongoing (albeit slowly), the fast charging controller is to blame.
3. Look at the charging indicator: if it blinks or changes color (for example, from green to red), this may indicate a controller error.

⚠️ Attention: if the phone turns on, but does not charge even after replacing the battery and cleaning the connector, with a 90% probability the motherboard is to blame. In this case, repairs can cost up to 70% of the price of a new phone - sometimes it is more profitable to buy a new device.

6. The influence of moisture and corrosion: what to do if the phone is wet

Moisture is one of the most insidious causes of charging problems. Even if the phone did not sink, condensation or high humidity can cause corrosion of the contacts. In this case, the charging indicator will light up, but current will not flow into the battery due to poor contact.

Signs of moisture ingress:

• 💧 Traces of oxidation (green or white coating) are visible in the charging connector or under the SIM card cover.
• 📱 The phone stopped charging after rain, swimming or being in the bathroom.
• 🔋 The moisture indicator (if any) on the battery or inside the case turned red.

What to do if the phone gets wet:

If more than a day has passed, but the phone still does not charge:

1. Check the charging connector for corrosion. If there is one, carefully clean the contacts with alcohol.
2. Connect the phone to charge. If it starts to charge, but then stops, this is a sign of residual moisture.
3. If the corrosion is severe (green coating), do not try to clean it yourself - contact service.

⚠️ Attention: never dry your phone with a hairdryer, microwave or on a radiator! Sharp heating can deform the board and worsen the corrosion. The best way is to leave the device in a dry place at room temperature for 1-2 days.

7. Features of specific brands: Samsung, Xiaomi, Huawei, etc. Manufacturers of smartphones often introduce unique charging technologies that can cause problems. Let's consider typical cases for popular brands:

Manufacturers AndroidSmartphones often introduce unique charging technologies that can cause problems. Let's consider typical cases for popular brands:

Brand	Typical problem	Solution
Samsung	The phone does not charge from third-party chargers ("Incompatible adapter" error)	Disable the "Fast charging" setting in Settings → Device care → Battery
Xiaomi	Charging only goes up to 80-90% ("Smart charging" function)	Disable in Settings → Battery → Settings → Smart charging
Huawei/Honor	Phone does not charge after update (error "Huawei SuperCharge is not supported")	Reset settings via Settings → System → Reset settings
OnePlus	Slow charging when using a non-original cable	Enable the mode Dash Charge in the battery settings

On some phones (for example, Samsung Galaxy S21 i newer) there is a function battery protection, which limits charging to 85%. To disable it:

1. Go to Settings → Device care → Battery.
2. Tap on the three dots in the upper right corner and select "Settings".
3. Disable the "Battery Protection" option.

It may be triggered when using non-certified accessories. To get around this: Xiaomi And Redmi may work charging blocking when using non-certified accessories. To get around this:

1. Connect the original charger.
2. Go to Settings → About phone.
3. Tap on "Version" several times MIUI" to activate developer mode.
4. Go back to "Settings → Advanced → Developer options" and disable "Verify USB accessories."

Frequently asked questions on this topic

The phone shows charging, but the battery percentage is dropping. What's the matter?

This is a sign that the charging current does not cover the self-discharge of the battery. Reasons:

• A weak adapter is used (for example, 5W instead of 18W).
• The battery is severely degraded (capacity has dropped below 50%).
• Background processes consume too much energy (check in Settings → Battery).

Solution: try charging the phone with it turned off - if the percentage increases, the problem is in the firmware or applications.

Is it possible to charge the phone without the original cable?

Yes, but with reservations:

• The cable must support the same power as the original one (for example, for Quick Charge 3.0 you need a corresponding cable).
• Third-party cables may not support fast charging (the phone will charge slowly).
• Cheap cables can damage the power controller due to unstable voltage.

It is better to use certified accessories from trusted brands (Anker, Baseus, Belkin).

Why phone charges only when the phone is turned off?

This is a typical symptom:

• Faulty power controller (cannot cope with the load when the phone is turned on).
• Severe degradation of the battery (in the off state, current goes directly to the battery).
• Failure in the firmware (for example, after an unsuccessful update).

Solution: try resetting the settings to factory settings. If that doesn’t help, you need to diagnose the board.

How to check if charging is actually happening?

There are several ways:

1. Connect the phone to the PC and check in the device manager - if it is detected as a “Charging device”, the current is flowing.
2. Install the application Ampere (shows the real charging current in mA).
3. Look at the indicator: if it blinks or changes color, charging is interrupted.

If Ampere shows 0 mA or negative values, there is no charging.

Is it worth repairing the phone if the board is faulty?

It depends on:

• The cost of repair (replacing the power controller costs 3-7 thousand rubles).
• The age of the phone (if it is more than 3 years old, repair may not be practical).
• The availability of a warranty (if the phone is under warranty, repair free).

Compare the price of the repair with the cost of a new phone. If the repair costs more than 50% of the price of a new device, it is better to consider buying a new smartphone.