Xiaomi Redmi 4X Not included: Complete guide to diagnosis and repair

Xiaomi Redmi Smartphone 4X (The codename santoni remains popular even years after its release, thanks to its balanced performance and robust "filling", but no device is immune to failure: sooner or later, owners face the fact that the phone does not respond to the on button. The causes can range from a dead battery to a hardware breakdown of the motherboard, and the main mistake users make in this situation is panic and chaotic actions that only exacerbate the problem.

This article will help you organize your diagnosis and choose the right algorithm for actions, we will analyze both software and hardware recovery methods, point out typical pitfalls, and give checklists for each stage. Importantly, some manipulations (such as disassembling the case or firmware) require experience — if you are not sure of your abilities, you better go to a service center. But in 70% of cases, you can solve the problem yourself without resorting to expensive repairs.

Before you start taking action, answer two questions:

1. Does the phone react to charging (vibration, indicator, heating)?
2. Was there any mechanical damage (fall, ingress of moisture) before the failure?

The answers depend on where to start the diagnosis.

1. Charging and battery check: basic steps

Start with the simplest - eliminate eating problems.Redmi 4X It's known that when you're in a deep discharge (below 3%), you can go into a coma and you can't show any signs of life even when you're connected to a charger:

✅ Use the original cable and power supply. Cheap accessories often don't provide enough current to wake up a dead battery. Connect your phone to charge for at least 30 minutes, even if there's no indication. Try a few outlets -- the problem may be the power supply.

✅ Check the cable and port USB. Check the connector on your phone for contamination or mechanical damage. If possible, try charging the Redmi. 4X from another device (for example, through OTG-Note the heating of the case – if the phone is warm but not turned on, this may indicate a short circuit.

✅ Alternative charging methods, if the standard method does not work:

• 🔌 Connect your phone to your computer through USB — Sometimes it helps to wake up the power controller.
• 🔋 Try wireless charging (if you have a Qi-enabled modification).
• 🔄 Remove the battery (if possible) for 10-15 seconds and insert it back in – it will reset the power chains.

Critical: If the phone stays cold after 2-3 hours of charging (not even slightly heated), it may indicate a power circuit break or battery failure, in which case a multimeter diagnosis or battery replacement will be required.

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If the charging indicator flashes red, but the phone doesn't turn on, it's a sign of a deep discharge. 12+ cable-off Wi-Fi/4G (if it turns on).

2. Forced reboot: Hard Reset and button combinations

If the phone doesn't respond to charging but you're sure the battery isn't drained (like the device turned off while in use), try a forced restart. 4X There are a number of ways:

🔄 Standard Hard Reset:

1. Press the Power + Volume button for 10-15 seconds.
2. Release the buttons when the Mi logo or vibration appears.

If the phone vibrates but does not turn on further, this is a sign of getting stuck on the boot (bootloop).

🔧 Fastboot mode:

• Press the power + Volume down for 10 seconds.
• If a picture of a rabbit in a fastboot mode appears, the phone is alive and the problem lies in the software.

📱 Recovery mode:

• Squeeze the power. + Increase the volume until the menu appears MI Recovery.
• If the menu is open, select Reboot. → Reboot to System.

Important: If the phone vibrates when you press the buttons, but the screen remains black, this may indicate damage to the display plume or a malfunction of the motherboard.

Check the reaction to the power clamping + Volume Up.

Try to clamp the power. + Loudness Down

Make sure the buttons don’t stick (wiggle your finger)

Try pressing the buttons with force (sometimes the oxidation of the contacts interferes with the operation)

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3. Diagnostics of hardware malfunctions

If software methods haven't helped, it's time to consider hardware breakdowns.Redmi 4X Have typical “weak spots” that are worth checking out first:

🔋 Battery:

• 📉 Bloating: If the phone body is “opened”, the battery should be replaced immediately – this is dangerous to health!
• 🔌 Contact break: wires running from the battery to the motherboard are often oxidized or departed.
• 🔋 Charge controller: chip BQ24193 (or similar) may fail by blocking power.

📱 Display and plumes:

• 🖥️ Train damage: if the phone vibrates but the screen is black – 90% of the problem is connecting the display to the board.
• 💥 Cracks on the motherboard: Often occur after falls, especially if the phone fell into a corner.

🔌 Port port USB food chain:

• 🔌 Oxidation of contacts in the Micro-USB connector (or Type-C in modifications).
• ⚡ Failure of the diode or fuse on the board (for example, F1 or F2).

How to check for yourself:

1. Take your phone apart (carefully so you don’t damage the plumes!).
2. Examine the battery for bloating and board for blackened or cracked elements.
3. Call the multimeter of the food chain (if you have skills).

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Warning: If you are unsure of your soldering skills, don't try to repair the board yourself.Mishandling the soldering iron can cause permanent damage to chips (such as the Snapdragon 435 processor or eMMC memory).

4.Fastboot Recovery: When the phone is 'alive' but not loading

If you managed to log in to Fastboot mode, the hardware is fine and the problem lies in the firmware or the bootloader, in which case flashing through the Mi Flash Tool will help.

📥 Preparation:

• 🖥️ Download the official firmware for Redmi 4X (santoni (select the Fastboot version, not the Recovery version).
• 🛠️ Install Qualcomm and Mi Flash Tool drivers (available at xiaomiflashtool.com).
• 🔌 Connect your phone to your PC in Fastboot mode.

⚙️ Firmware:

1. Run the Mi Flash Tool and select the downloaded firmware file (extension.tgz).
2. Press Refresh – the program must detect the device (appears) COM-port).
3. Select Clean All (Full Clean) or Clean All and Lock (if you want to lock the bootloader).
4. Press Flash and wait until the end (the process will take 5-10 minutes).

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Warning: If the firmware is interrupted, the phone may turn into a brick. USB-cable and don't pull the power cord during the process. Also make sure there's enough disk space on the PC (the firmware weighs). ~2 GB).

🔄 What to do if the firmware does not help:

• 🔧 Try a different firmware version (e.g., older or global). MIUI).
• 🔋 Check if the antivirus is blocking the Mi Flash Tool.
• 🖥️ Try flashing from another computer (sometimes the driver problem).

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If the phone turns on after firmware, but hangs on the Mi logo, reset via Recovery (Wipe Data), which will delete user data, but return the functionality.

5. Post-update issues: bootloop and "perpetual boot"

Redmi 4X Often suffers from bootloop (infinite reboot) after an update MIUI. This is due to kernel conflicts, improperly installed modifications, or failures when updating through the OTA. Here's how it's treated:

🔄 Soft discharge:

• 📱 Squeeze the power. + Volume Up to Enter Recovery.
• 🔧 Choose Wipe Data → Wipe All Data (this will delete all user files!).
• 🔄 Reboot through Reboot → Reboot to System.

📥 Flashing through Recovery:

• 🖥️ Download the firmware in.zip format for Recovery (for example, from here).
• 📁 Rename the file to update.zip and place it in the root of internal storage (if the phone is defined as a drive).
• 🔧 In the Recovery menu, select Install. update.zip to System.

🔧 Reverse to the old version MIUI:

1. Find an archive with an earlier version of the firmware (for example, MIUI 10 instead MIUI 12).
2. Sweat it through Fastboot (as described in the previous section).
3. After successful download, disable automatic update to Settings → The phone. → Updating the system.

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Note: if bootloop occurred after unlocking the bootloader, it may have been installed incompatible custom firmware (for example, LineageOS for another model), in this case, only a complete flashing on the stock will help. MIUI via Fastboot.

6.When to contact the service: signs of serious breakdowns

Not all problems can be solved on their own, but here are the symptoms for which you should consult a professional:

🚨 Hardware signs:

• 🔥 Smell of burns or visible traces of melting on board.
• 💧 Corrosion after moisture is ingested (even if the phone is dry»).
• 🔌 No response to charging and buttons (full brick»).
• 📱 Artifacts on the screen (strips, flickering, broken pixels) – a sign of damage GPU display.

🔧 Programmatic features:

• ⚡ Continuous reboots even after firmware.
• 📵 Absence IMEI (phone doesn't catch the net).
• 🔋 Instant battery discharge (from 100% to 0% in a few minutes).

💰 Cost of repair (example prices for Redmi) 4X):

🔍 How to choose a service:

• 📍 Prefer centers with a 3-month guarantee.
• 🔧 Check if the masters have experience with Xiaomi (not all repairmen know the features of Fastboot firmware).
• 💬 Read reviews on 2GIS or Yandex.Maps – pay attention to complaints about “unsolvable problems».

7 Prevention: How to avoid problems in the future

To Redmi. 4X You have been there longer, follow these recommendations:

🔋 Battery:

• 🔌 Do not allow a deep discharge (charge at 10-20%).
• ⚡ Avoid overheating (do not play heavy games on charging).
• 🔋 Calibrate once every 3 months: discharge the phone to 0%, then charge to 100% without interruption.

📱 Software:

• 🔄 Update regularly MIUI, not through OTA, if the phone is modified (for example, the bootloader is unlocked).
• 📁 Do not install custom firmware unless you are sure it is compatible with the Snapdragon 435.
• 🛡️ Use antivirus (such as Mi Security) to protect against malware.

💧 Mechanical protection:

• 📱 Stick glass and cover – this will reduce the risk of damage when falling.
• 🚿 Avoid moisture (even the steam in the bathroom can cause corrosion).
• 🔌 Clean the port regularly USB from dust (toothpicking or compressed air).

🔧 Backup:

• ☁️ Set up automatic backup in Mi Cloud (Settings) → Xiaomi Account → Mi Cloud → Backup).
• 📁 Once a month, copy important files to your PC or external drive.

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If the phone starts to "glutch" (spontaneous reboots, brakes) is the first bell! Don't ignore the symptoms: perform a reset or reflash the device until the problem becomes critical.

FAQ: Frequent questions about Redmi malfunctions 4X