Xiaomi phone 4X What to do if the smartphone does not respond to the charging and power button

Your Xiaomi Redmi 4X (or other model of the series 4X, Like Mi. 4X) It stopped turning on, didn’t respond to charging, and didn’t show signs of life? This problem is familiar to many owners of Xiaomi budget smartphones released in 2016-2018. The causes can range from a simple battery discharge to serious hardware malfunctions, but in 70% of cases the device manages to “reanimate” on its own.

In this article, we will discuss all the possible reasons why Xiaomi 4X It doesn't turn on, from software failures to physical damage to the board, and you'll get step-by-step instructions with photos and videos, checklists for diagnostics, and tips on how to avoid repeated breakdowns. If the phone does not respond to the power button, does not charge or hovers on the Mi logo, here you will find a solution.

Warning: Some methods (such as flashing through the Fastboot or disassembling the body) require caution. 4X With a Snapdragon 435 processor, an incorrect firmware update can lead to a "brick" (complete failure) of the device.

1. Diagnostics the problem: why Xiaomi 4X left out

Before you start repairing, you need to understand what exactly happened, and here are the main symptoms and their possible causes:

• 🔋 Phone does not respond to charging – a problem with cable, power supply, Micro-USB connector or power controller.
• 📵 The screen is black, but the phone vibrates when charging is connected - firmware failure or damage to the display plume.
• 🔄 The device hung on the Mi logo - damage to system files (bootloop).

On Xiaomi Redmi models 4X Two critical failures are most often encountered:

1. Firmware failure after unsuccessful update through OTA manual intervention (e.g. obtaining root rights).
2. Battery degradation – after 3-4 years of operation, the battery loses capacity and can completely discharge to the level at which the power controller blocks charging.

If the phone has responded to charging at least once (the display lights up, there was vibration), the chances of recovery are high, and if the device is dead (there are no signs of life), a deeper diagnosis will be required.

2.The first steps: what to do if Xiaomi 4X left out

Start with the simplest steps that often help bring your phone back to life:

Step 1. Check the charger and cable

Use the original cable with the power supply on 5V/2A (It's on Xiaomi. 4X You often have problems with cheap Micro-USB cables that don't provide stable contact. Try to move the cable slightly in the connector — if the phone starts charging, the problem is oxidized contacts or mechanical damage to the socket.

Step 2: Forced reset

Hold the power button for 15 to 30 seconds. If the phone is discharged to zero, it may take a few minutes before the charging indication appears. MIUI It helps the combination of nutrition + Loudness up (hold 10-15 seconds).

Step 3. Check on charge from the computer

Connect the phone to USB-If the computer makes a sound of the device's connection, but the phone doesn't respond, the problem may be in the display or the plume.

⚠️ Note: Do not use Quick Charge from other devices – this can damage the power controller on Xiaomi 4X, high-current.

3.If Xiaomi 4X No charge: Restore power

If the phone is not responding to charging, but you are sure that the cable and power supply are working, the problem may be in one of three components:

How to check the battery:

1. Remove the battery (if the body is collapsible).
2. Look at its condition: bloating, swelling or corrosion indicate the need for replacement.
3. Try connecting your phone to charge without a battery – if an indication appears, the problem is in the battery.

Recovery of the discharged battery:

If the phone has been lying low for a long time, the power controller can block charging, in which case the lighting method will help:

1. Get a working battery from another Xiaomi 4X (voltage-like).
2. Connect it to the phone for 5-10 minutes.
3. Disconnect and plug in the original battery – the phone should start charging.

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If you don't have a spare battery, you can use a power bank with boost function. Connect it to your phone and hold the power button - sometimes this helps wake up the controller.

4. Software glitches: how to get out of bootloop on Xiaomi 4X

If the phone turns on but hovers on the Mi logo or cyclically reboots (bootloop), the problem is the firmware. 4X It often happens after:

• 📱 Failed updates through OTA.
• 🔧 Installation of custom firmware (LineageOS, Pixel Experience).
• 🛠️ Getting root rights through Magisk or SuperSU.
• 🗑️ Cleaning up the section /system through TWRP.

Solutions:

Method 1: Hard Reset (Hard Reset)

This will delete all the data, but it will return the phone to the factory settings.

1. Turn off your phone (if it’s in bootloop, hold the power button for 10-15 seconds).
2. Press Power + Volume up until the Mi logo appears.
3. From the Recovery menu, select Wipe Data → Wipe All Data.
4. Confirm the action and restart the phone.

Method 2: Fastboot flashing

If the reset didn't work, you'll need to reinstall the firmware.

• A computer with ADB/Fastboot drivers installed.
• Firmware file for Xiaomi 4X (You can download it at Xiaomifirmwareupdater.com).
• The Mi Flash Tool.

Step-by-step:

1 Unpack the firmware in a folder without Cyrillic.


2. Turn off the phone and press Volume Down + Power to enter the Fastboot.




3. Connect the phone to the computer.




4. Launch the Mi Flash Tool, select the folder with the firmware.




5. Press Refresh, then Flash (select Clean All).




6. wait for completion (5-10 minutes) and restart the phone.

⚠️ Attention: Xiaomi Redmi 4X With a blocked bootloader, flashing through Fastboot may require unlocking through the Mi Unlock Tool.This erases all data and requires a Mi Account link.

5. Hardware malfunctions: when you need to disassemble the phone

If the software methods didn't help, the problem is most likely hardware. - Xiaomi 4X most often:

• 🔋 Battery - bloating, loss of capacity, break of the chain.
• 🔌 Charging connector - oxidation of contacts, separation from the board.
• 📱 Display plume - break or oxidation (phone turned on, but screen black).
• 🔧 Power controller - microchip PMIC (board next to the charging socket).
• 💻 Processor or memory - overheating, chip dumping (repair is economically impractical).

How to Disassemble Xiaomi 4X:

You'll need to take this apart.

• Plastic spatula or mediator.
• Torx screwdriver T3 or Y00 (depending on the modification).
• Dryer or thermo-air station (for welding plumes).

Step-by-step:

1. Turn off the phone and remove the tray for SIM-map.
2. Heat the back cover with a hair dryer (temperature 60–80)°C. This will soften the glue.
3. Carefully tuck the lid with a spatula, starting at the corner next to the charging connector.
4. Unscrew the screws, disconnect the battery plume (do not pull the wires!).
5. Check the status of the battery, connector and board for damage.

Typical finds in the dismantling:

• 🔋 Bloated battery – requires immediate replacement (may damage the charge).
• 🔌 Oxidized contacts of the connector - cleaned with alcohol and brush.
• 💥 Burned elements on the board - black spots, bloated capacitors (repair in the service is needed).

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If Xiaomi is on board 4X Fire-in-the-box elements are found (especially near the Snapdragon 435), and repairs are more expensive than the phone itself.

6.If nothing has worked: service center or recycling

If all of these methods have not worked, there are two options:

Option 1: Contact the service centre

The cost of repairing Xiaomi 4X 2026:

Option 2: Recycling the phone

If the repair will cost more than 5000-6000 rubles, it makes sense to consider buying a new smartphone. 4X In 2026, the budget model is inferior (Redmi). 12C, Poco C55) performance and update support, but before disposal:

• 🔄 Extract. SIM-Memory card and card (MicroSD).
• 🗑️ Delete your Mi Account (if the phone is still on) so that the new owner does not have access to your data.
• ♻️ Hand over your phone to the electronics reception point - for work boards and batteries sometimes give a discount on a new device.

Where to get Xiaomi 4X spare-part:

• 🛒 Salons (Svyaznoy, MTS, Beeline) - sometimes accept old phones under the trade-in program.
• ♻️ Ecotechnoparks in Moscow, St. Petersburg and other major cities.
• 💰 Avito/Yula – can be sold for spare parts (fee, camera, speakers).

7. Prevention: How to prolong the life of Xiaomi 4X

If you have managed to restore your phone, follow these guidelines to avoid repeated breakdowns:

• 🔋 Battery: Do not discharge your phone to 0% - connect charging at 15-20%. Use only original or certified power supplies. Avoid overheating (do not play heavy games when charging).
• 📱 Software: Do not install custom firmware without backup.Update MIUI Only through official channels (Settings) → The phone. → Update system. Do not delete system applications without root permissions.
• 🛡️ Physical protection: Use a cover and protective glass. Avoid moisture (even if the phone does not sink, contact oxidation is inevitable). 4X fragile, especially in the area of the charging connector.

How to check the status of the battery:

Install the AccuBattery app (available on Google Play) and it will show you:

• Current battery capacity (if less than 60% of the original capacity, it is time to change).
• Discharge speed.
• Battery temperature (norm - up to 40)°C).

1. Discharge the phone before it turns off.

2. Connect to charging and wait 100% (do not turn on).

3. Turn off the charging, turn on the phone and again wait for the discharge to 0%.

4. Repeat the cycle 2-3 times. This will help to reset the controller errors.-->

FAQ: Frequent questions about Xiaomi malfunctions 4X