Xiaomi Redmi 9 doesn’t turn on: what to do if the phone is dead

Why Xiaomi Redmi 9 might not be included?

Your Xiaomi Redmi 9 has stopped responding to the power button, the screen is black and the charging indicator is not on? This problem is familiar to many owners of budget Xiaomi smartphones, but it does not always mean a serious breakdown. In 60% of cases, the device manages to “reanimate” yourself without resorting to a service center.

The causes can be software-based (firmware failure, system freeze) or hardware-based (battery discharge, plume damage, power controller failure). It is important to diagnose the problem properly so as not to make matters worse. For example, if the phone is not responding to charging but is warming up, which is a sign of short circuit, not a dead battery. In this article, we will look at all possible scenarios and give clear instructions on what to do in each case.

Let's just say, if the phone falls into the water, has been mechanically impacted or overheated, it is better to immediately contact the service. Self-manipulation in such cases can lead to irreversible damage to the board. In all other situations, follow our recommendations in order.

1. Checking of charging and battery

The first thing you need to do is rule out power problems. Even if you're sure the battery is charged, test it with our algorithm. Redmi 9 is known for being able to go deaf to 0% and not show signs of life when connected to a weak power source.

Use the original power supply (5V/2A) or certified analogue with Quick Charge 3.0 support. Connect your phone to charge and pay attention to:

• 🔌 Charging indicator – should light up red/orange in 5-10 minutes.
• 🔥 Heating the case – if the phone is warming heavily, it may indicate a short circuit.
• ⚡ Reaction to hold the power button – try to pinch it for 20-30 seconds.

If the light isn't on, try another cable and power supply. Sometimes the problem is the oxidized contacts of the USB-C connector -- clean them gently with a toothpick dipped in alcohol. Never use metal objects to clean the connector -- it can close the contacts!

⚠️ Warning: If the phone doesn't respond to charging for more than a day, but it doesn't warm up, the power controller is likely to have failed.

2. Forced reset (Hard Reset)

If the phone doesn't turn on but is responding to charging (light or vibrating), try a forced reboot, which helps with a system freeze or firmware failure.

For Xiaomi Redmi 9, the procedure looks like this:

1. Turn off the phone from charging.
2. Press the power button + volume button for 10-15 seconds.
3. If the Xiaomi logo appears, release the buttons. The phone should boot as normal.

If the phone turns off again after the reboot or freezes on the logo, this is a sign of damaged firmware, in which case you will need to flash it through Fastboot or Recovery.

Turn off the charging cable |

Make sure the buttons are not stuck |

Hold Power + Volume Up for 15 seconds |

Release buttons when the logo appears-->

3. Recovery mode boot and reset settings

If the phone vibrates or briefly turns on the screen but doesn’t boot fully, try entering Recovery mode, which will allow you to reset your settings or reflash the device without connecting to a PC.

Instructions for Redmi 9:

1. Turn off the phone (if it is on, press the power button for 10 seconds).
2. Press the power button + volume button.
3. When the Mi logo appears, release the power button, but keep holding the Volume Up until you see the Recovery menu.

From the Recovery menu, select Wipe Data or Reboot with volume buttons, power buttons, and attention: reset will delete all data from internal memory!

4. Firmware through Fastboot (if the phone doesn't boot)

If the reset didn’t help and the phone still doesn’t turn on or hovers on the logo, you’ll need firmware via Fastboot mode.

• 📱 The phone is turned on, but got stuck on the screensaver Xiaomi.
• 🔄 There is a cyclical reboot (bootloop).
• 🛠️ After the update, the system does not start.

For the firmware you will need:

• A computer with Xiaomi drivers installed.
• Mi Flash Tool (download from the official website)
• The firmware for Redmi 9 (the version should match your model!)
• Original. USB-cable.

Step-by-step:

1. Turn off the phone.
2. Press the power button + volume down button before the image with the rabbit in the header (Fastboot mode) appears.
3. Connect the phone to the PC.
4. Start the Mi Flash Tool, select the firmware and press Flash.

⚠️ Warning: Wrong firmware can turn your phone into a brick. Make sure you download the file for the Redmi 9 (codenamed lancelot).

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Before you run the firmware, check the bootloader version. If it is blocked, you will need to unlock it through the official Xiaomi website (the procedure takes up to 72 hours).

5. Checking hardware faults

If none of the software methods worked, the problem is likely hardware, and here are the most common Redmi 9 malfunctions that may cause it to fail:

• 🔋 Battery failure - bloating, loss of capacity, chain break.
• 🔌 Damage to the charging connector - oxidation, mechanical damage.
• 🛠️ Power controller malfunction – the phone does not charge, does not respond to the button.
• 📱 Display plume or battery dump – often occurs after falls.

If you don't have experience in electronics repair, you should go to a service center, but you can do some of the checks yourself.

1. Remove the back cover (carefully so as not to damage the plumes!).
2. Check if the battery is swelling (if so, don’t turn on the phone! it’s dangerous!).
3. Disconnect and reconnect the battery plume.
4. Check if the contacts on the motherboard are leaving.

If no problems are found after visual inspection, but the phone still doesn't turn on, the cause may be a burnout of the chips (for example, after a power surge) or damage to the processor, in which case repairs will cost more than the cost of the phone itself.

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If the phone falls, gets wet, or gets overheated, it's 90 percent likely that the problem is hardware. Software won't help.

6. When should I contact the service?

Not all breakdowns can be repaired by yourself.

• 💥 The phone fell from a height or was heavily hit.
• 🌊 It is in water or other liquid (even if it is drying outwardly).
• 🔥 Overheated (for example, during charging or playing).
• 📉 After your manipulations began to warm, smoke or smell of burning.
• 🔧 You took your phone apart but couldn’t find the cause of the malfunction.

The cost of repairing Redmi 9 depends on the type of breakdown:

Before you carry your phone to the service, check the warranty. If the device is warranty, do not disassemble it yourself - this will void warranty obligations. mi.com/ru/service.

7.How can we avoid problems in the future?

To ensure that your Redmi 9 lasts longer and doesn’t face power issues, follow these guidelines:

• 🔋 Don’t drain your phone to 0% – it reduces battery life.
• 🔌 Use original chargers – cheap analogues can disable the power controller.
• 📱 Do not update your firmware through third-party sources – this can cause crashes.
• 💧 Avoid getting moisture, even if the phone has protection. IP53, It won't save you from being completely immersed.
• 🔥 Do not leave your phone in the sun or near heat sources – overheating destroys the battery.

Also check the battery status regularly through the Settings → Battery Status menu. If the capacity has dropped below 80%, consider replacing the battery.

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Store your phone at temperatures between +10°C and +35°C. If you leave it unused for a long time, charge the battery to 50% – this is the optimal level for long-term storage.

FAQ: Frequent questions about the broken Xiaomi Redmi 9