Xiaomi does not respond to charging: reasons and solution

When Xiaomi suddenly stops responding to the network connection, it always takes you by surprise: the screen stays black, the indicator does not light up, and the device essentially turns into a useless piece of plastic and glass.

Before you bring the gadget to the service center, you need to conduct a thorough diagnosis. Often users are faced with software failure of the power controller or banal contamination of the connector, which is easy to fix at home. It is important to consistently eliminate all possible faults, moving from simple to complex.

In this article, we will discuss all the known methods of restoring charging on Redmi and POCO smartphones. You will learn how to check the cable, reflash the controller and even start a device with a fully discharged battery when it seems that there is no hope.

Primary diagnostics and inspection of accessories

The most common reason for not charging is the malfunction of the external power supply: cables and power supplies are subject to constant mechanical stress, twisting and voltage drops, the inner veins of the wire can break, and the power supply unit can lose the ability to give the necessary current.

Try replacing the cable with a known serviceable, preferably original or certified MFi / Qualcomm. Cheap analogues often can not withstand the fast charging currents of Quick Charge or Power Delivery, which causes the phone to block the power supply to avoid overheating.

• 🔌 Try using another one. USB-cable, preferably without visible cracks and damage to insulation.
• 🔌 Connect your smartphone to another power source: a computer, power bank or outlet in another room.
• 🔌 Check the power supply, connecting to it any other gadget with a similar connector.
• 🔌 If wireless charging is used, make sure the case is not too thick and does not contain metal elements.

Notice the condition of the connector itself. A Type-C or Micro-USB port often accumulates dust, pocket pile and small debris, which creates an obstacle to tight contact between the plug and contacts inside the phone. Carefully, without using metal objects, try to clean the port.

Software failure and system freeze

Sometimes the problem lies deeper in the MIUI or HyperOS operating system, and it happens that the power management process freezes, and the phone cannot physically recognize the connection of the charger, in which case the screen may burn, but the battery icon does not appear, or the device simply hangs on the logo.

To fix this error requires a forced reboot that resets temporary data from RAM and restarts system services, a secure procedure that doesn't delete your personal data, photos or contacts, and is similar to taking out the battery on old phones.

⚠️ Warning: If the phone is heated to a point where it hurts to hold it, don't plug it into charging! let the device cool completely at room temperature as lithium-ion batteries have charge protection at critical temperatures.

To perform a hard restart, you need to pinch the button combination. On most Xiaomi models, this is an on button that needs to be held for about 10-15 seconds. If the device vibrates or the "Mi" logo appears, release the button. If there is no reaction, try pressing the volume and power buttons simultaneously.

Cleaning the charging connector from pollution

Port pollution is the "silent killer" of charging faced by smartphone owners, who often carry them in their jeans pockets. Microscopic pile is pressed at the bottom of the connector, preventing the cable from entering the end. Contacts do not close, and current does not go.

For cleaning, it is best to use a wooden toothpick or a plastic toothbrush. Metal needles are strictly not recommended, as you can accidentally close contacts or damage the central tongue inside the Type-C. You need to act with the phone turned off and good lighting.

Carefully, without much pressure, use the tool inside the port to pick up the compacted debris. You can use a can of compressed air to blow out the dust. After the procedure, carefully inspect the connector with a flashlight - the bottom should be clean, and the contacts should be shiny, without oxidation.

Deep battery discharge

If the phone was long discharged, the battery voltage could have dropped below the critical threshold, and in this state, the power controller blocks charging to prevent the battery from bloating or ignition, a protective mechanism that requires a special approach to activate.

You'll need to leave the device on charge for a long time, sometimes up to several hours. Don't be afraid if the indicator doesn't light up in the first 30-40 minutes. The controller needs time to rock the cells and raise the voltage to the minimum level necessary.

Use a less powerful power supply, such as an old smartphone (5V 1A) to "rock" the power supply, and the currents may not be high due to protection, and if after 2-3 hours the phone has not shown signs of life, it is possible that the battery will completely fail.

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Useful tip: If the phone reacts to the connection with vibration, but the screen does not turn on, try to press the button to reduce the volume and connect to the PC. If the computer makes a sound of the device connection, then the controller is alive, and the problem is in the screen or system.

Resetting and calibration of the battery

If hardware methods didn't help, maybe the software settings for displaying the charge have gone wrong, so the system might think the battery is full when it's empty, or vice versa, and in this case calibration helps, which allows the controller to re-identify the actual capacity.

The calibration process takes time. You need to completely discharge the phone before you turn it off, then charge it when it's off to 100%. After you reach full charge, don't turn off the cable for another 1-2 hours. Then turn on the device, make sure it's 100% charge, and if the percentage drops, charge it again to maximum.

As a last resort, if the problem is caused by a system file conflict, you may need to reset completely to factory settings.Be sure to save all important data to the cloud or computer before this procedure, as all information will be deleted. Go to Settings menu → About phone → Reset settings.

• 🔋 Discharge the smartphone until completely switched off.
• 🔋 Put on charging in the off state to 100%.
• 🔋 Keep on charging for another 1 hour after full charge.
• 🔋 Turn on your phone and check the stability of the work.

⚠️ Warning: Hard Reset deletes all photos, contacts, and apps, and only use this method if other methods have failed and you have backed up.

Engineering menu and controller check

For more advanced users, it is possible to check the status of the battery through the Xiaomi engineering menu, which is a hidden part of the system, where the technical parameters of the battery and the power controller are displayed, accessed through a special code in the call.

Dial the combination ##6485##. In the menu, find the parameters. MB_06 (battery status; and MB_00 (If the state field says "Good," it means the system sees the battery correctly. If it says "Bad" or "Unknown," it's a hardware problem.

Codes for checking Xiaomi battery:




1. ##6485## - The main menu of battery information.




2. ##4636### - Testing menu (Battery Information section).




##3424### - Hardware Test).

You can also see the number of recharge cycles on this menu, if the meter shows more than that. 500-800 And as you cycle, and the phone stops charging or charging, it's a direct sign of physical wear and tear on the battery chemistry.

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If the engineering menu has a battery status of Bad or a voltage below 3.0V when charging, a battery replacement or repair of the power chain at the service center is required.

Frequently Asked Questions (FAQ)