Why Xiaomi Redmi 9 is not included: a full analysis of the causes and solutions

Xiaomi Redmi 9 is one of the most popular budget smartphones, but even it is not immune to sudden breakdowns. When the phone stops turning on, it can occur due to software failure or hardware damage. In this article, we will analyze all possible scenarios, from a banal battery discharge to serious malfunctions of the motherboard.

It's important to understand that diagnosing a broken smartphone requires a systematic approach. We're not going to limit ourselves to standard tips like "press the power button," but we're going to consider even rare cases -- for example, when the device vibrates but the screen remains black, or when charging is not possible, and for convenience, we've divided all the reasons into two big groups: software (which can be eliminated yourself) and hardware (requires an expert intervention).

If your Redmi 9 (including Redmi modifications) 9A, 9C, 9T) It doesn't show signs of life, it doesn't panic, and in 70 percent of cases, you can solve the problem without going to the service center.

Battery Discharge: When the Phone is Dead but Alive

The most obvious reason why Xiaomi Redmi 9 doesn't turn on is because it's completely drained, but even here, there's a nuance: If the smartphone goes zero, standard charging might not work because of the power controller protection, and in such cases, you need to recharge.

How to check if the problem is in the battery:

• 🔌 Connect the original charger (at least) 10W) And leave it for 30 to 60 minutes. Charging indicator (if it's burning) is a good sign.
• 🔋 Try charging from another source: a laptop, a power bank, another adapter. Sometimes the problem is a damaged cable.
• 🔄 If after a long charge the phone still does not respond, try forced start: pinch the power + Volume up for 10-15 seconds.

If the charging indicator does not burn at all, this may indicate:

• 🔌 Faulty charging port (oxidation, contact break).
• 🔋 Damage to the battery (swelling, short circuit).
• 📱 Failure of the power controller on the motherboard.

⚠️ Warning: If the battery is swelling (see the back cover raised), don't try to charge the phone - it's dangerous! Remove the battery immediately (if possible) or contact the service.

2. Software failures: when the phone "hangs" on the black screen

If Redmi 9 vibrates when you press the buttons, the backlight of the screen flashes, but the image does not appear - most likely, it is a software glitch.

• 🤖 Failed update MIUI (especially if the process is interrupted).
• 📱 Installation of incompatible software or modified firmware.
• 🗑️ Memory overflow (less than 500 MB of free space).
• 🔄 Application conflict (for example, after installing “optimizers” or antiviruses).

How to restore work:

Method 1: Forced resetting

Squeeze the power combination + The volume up for 10 to 20 seconds until the Xiaomi logo appears.If it worked, the problem was the system's temporary freeze.

Method 2: Entering Recovery Mode

If the forced reboot didn’t help, try going into recovery mode:

1. Turn off the phone (if it freezes, press the power button for 30 seconds).
2. Press Power + Volume up before the Recovery menu appears.
3. Select Wipe Data → Wipe All Data (reset to factory settings).
4. After resetting, restart the device.

⚠️ Warning: Reset will delete all data on your phone!If you have Mi Account Sync or Google Backup enabled, some of the data can be restored.

Try to reboot your phone in the usual way

Check the battery charge (at least 30%)

Connect the phone to a PC for backup (if determined)

Remember Mi Account (login and password) to unlock after reset-->

Method 3: Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fastboot Fast Fastboot Fast Fastboot Fast Fastboot Fastboot Fast Fastboot Fast Fastboot Fast Fastboot Fast Fast Fastboot Fastboot Fast

If the phone doesn't load even after it's reset, you'll need to flash it over the Fastboot.

• 🖥️ Computer with installed Xiaomi drivers and Mi Flash Tool.
• 📁 Official firmware for Redmi 9 (download from Xiaomi Firmware website).
• 🔌 Cable USB (preferably original).

Instructions:

1. Turn off the phone.
2. Press Power + Volume Down to enter Fastboot.
3. Connect your phone to your PC and start the Mi Flash Tool.
4. Select the downloaded firmware and press Flash.
5. Wait until the process is completed (5-10 minutes).

3. Hardware malfunctions: when without repairs can not do

If the software methods didn’t help, the problem is probably the hardware. Consider the typical hardware breakdowns of the Xiaomi Redmi 9:

The most common hardware problems:

• 🔋 Battery bloating, which causes contact detachment and short circuits, is dangerous to health!
• 📱 Damage to the charging connector – oxidation or break of contacts due to frequent connections.
• 🔌 Power controller failure – the phone does not charge or turn on.
• 🖥️ Failure of the motherboard – for example, after falling or getting moisture.

If you suspect a hardware breakdown but are not sure of its nature, perform a visual inspection:

1. Check if there are cracks, dents or traces of oxidation on the body.
2. Light a flashlight on the screen – if the image is barely noticeable, the problem is in the backlight.
3. Smell the phone – the smell of burning indicates burned elements.

⚠️ Warning: If the phone falls into water or is subjected to a strong vibration (for example, in a car), do not try to turn it on - this can aggravate the damage.

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If the phone doesn't turn on after a fall, don't shake it or knock on the case. Microcracks on the board can lead to a final failure.

4. Problems with the power button: mechanical and software

The power button in Redmi 9 is one of the most vulnerable.

• 🔘 Sticking due to dust or moisture.
• 🔧 Move away from contact on the board (often after falls).
• 🤖 Stop working due to a firmware failure (rarely, but it happens).

How to check if the button is to blame:

1. Connect your phone to charge. If it starts charging (the indicator burns) but doesn't respond to the button, it's the problem.
2. Try to pin the volume up. + Volume down at the same time – sometimes it works as an alternative switching on.
3. If the phone vibrates when connected to the PC but does not turn on, the power button may be faulty.

Interim decisions:

• 🔧 Knock on the button area carefully (sometimes helps if the contact has gone away).
• 🔌 Connect your phone to your PC and try to turn it on through ADB (If the debugging was on USB). Team: Adb shell reboot
• 🔄 If the button is stuck, try to clean it with alcohol (but do not pour the liquid inside!).

If the button is physically broken, you can replace it yourself (the cost of the part is about 300-500 rubles), but this will require disassembling the phone, which can damage the plumes.

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If the power button doesn't work, but the phone is responding to charging, it's probably mechanical, and 80 percent of the time, changing the button or cleaning the contacts helps.

5.Moisture and corrosion: the hidden enemies of the smartphone

Xiaomi Redmi 9 has no official water protection (IP-certification), so even a small ingress of moisture can cause corrosion:

• 💧 The phone stopped turning on after contact with water (even if it is dry).
• 🔌 Charging is jerking or not going at all.
• 📶 The antenna stopped catching the net.
• 🔊 The speakers are wheezing or not working.

What to do if your phone is wet:

1. Turn it off immediately (if it still works) and remove it. SIM-card.
2. Dry for at least 48 hours in a dry place (not on the battery! risk of overheating).
3. Use silica gel (packages of shoe boxes) to absorb moisture.
4. Do not turn on your phone until you make sure it is completely dry!

If the phone does not turn on after drying:

• 🔍 Check the fee for the presence of oxidation (green or white plaque).
• 🔧 Clean the contacts with alcohol (90%+) and soft brush.
• 📱 If corrosion is severe, you will need to solder the damaged elements (only in the service!).

⚠️ Warning: Do not use a dryer - hot air can damage the screen and battery! Also avoid rice: it is not effective and can clog connectors.

6. When firmware is to blame: mistakes MIUI and their consequences

Xiaomi Redmi 9 is working on the MIUI, It can sometimes go off after an update:

• 🤖 The phone boots to the Xiaomi logo and shuts down.
• 📱 The error is called No Command or Orange State.
• 🔄 After the update, the phone went to bootloop (infinite reboot).

Reasons:

• 📁 Damage to system files when updating.
• 🔧 Version incompatibility MIUI with iron (rarely, but with manual renewal).
• 🗑️ Conflict with user settings (for example, after building.prop changes).

Decisions:

Method 1: Recoil through Recovery

If your phone is loaded into Recovery, try:

1. Select Wipe Cache Partition (cleaning cache).
2. If it doesn’t help, make Wipe Data (full reset).
3. If it doesn’t work, install the old version. MIUI through ADB Sideload.

Method 2: Unlocking the bootloader and flashing

If the phone is in Orange State (locked bootloader), you will need:

1. Unlock the bootloader through Mi Unlock Tool (you need a Mi Account tied to the phone).
2. Install custom recavers (TWRP) and sew clean MIUI.

⚠️ Important: Unlocking the bootloader erases all data and can result in a blink (complete failure) if something is done wrong!

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Before the firmware check the version MIUI For your model, the firmware installation from Redmi. 9A Redmi 9 will cause you to be inoperable.

7. Diagnosis through PC: what you can learn without disassembly

If the phone does not turn on, but reacts to the connection to the computer, you can conduct a diagnosis:

How to check your phone via PC:

1. Connect the phone to the computer.
2. Open the Device Manager (Windows) and see how the device is defined.
3. If the phone is seen as MediaTek Preloader or Qualcomm 9008, you can try resuscitating it via the phone. SP Flash Tool or Mi Flash Tool.
4. If the computer does not respond at all, the problem is USB-port of the phone or controller.

For advanced users:

You can try to get a log through ADB (If the phone is responding in any way):

adb logcat > log.txt

This will help to identify errors in the system.

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

Not all problems can be solved by yourself. Contact the service center if:

• 🔥 The phone is still warmed even when it is off.
• 💥 There were physical injuries (fall, impact, moisture intrusion).
• 📵 The phone does not respond to charging, buttons, or connection to the PC.
• 🔧 After disassembly revealed damage to the board (burnt elements, cracks).

How much will the repair cost:

How to choose a service:

• 🔍 Check reviews on Yandex.Maps or 2GIS.
• 📋 Ask if you have a warranty for repairs (good services can be provided for 3 months).
• 💰 Compare prices in 2-3 workshops.
• 🔧 Check if they use original parts or analogues.

⚠️ Warning: If the phone is warranty, don’t open it yourself! This will deprive you of the right to free repair in the official Xiaomi service.

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Official Xiaomi service centers are usually more expensive, but they give a warranty and use original parts. informal workshops can make cheaper, but the risk of poor-quality repairs is higher.

FAQ: Frequent questions about Xiaomi Redmi 9 malfunctions