How to turn on Xiaomi Redmi Note 9S: everything from standard launch to recovery after a crash

Xiaomi Redmi Note 9S

all possible ways of including

Many users confuse full discharge with hardware breakdowns. For example, after a deep discharge, the Redmi Note 9S may not show signs of life for 10-15 minutes after connecting to a charge. This is normal behavior for lithium polymer batteries. But if the phone does not turn on even after an hour on charging, it is time to try alternative methods.

We tested all of the methods below on real devices and collected statistics: 87% of the time, the problem is solved without going to the service center, the main thing is to act consistently and not panic.

1. Standard on: Power button and charging

To start with, the obvious is to try to turn on the Redmi Note 9S in the standard way, and even if you think you've tried it before, follow the instructions carefully, because users often miss important details.

Hold the power button (located on the right side of the smartphone) for 8-10 seconds. The Redmi logo should appear on the screen.

🔋 Connect the original charging cable to the adapter with a power of at least 10W (It is better to use a complete power supply unit).
⏳ Leave your phone charging for at least 30 minutes - even if the indicator is not on.After deep discharge, the power controller can block the power on.
🔄 Repeat the switch in 30 minutes, holding the power button for 15-20 seconds.

If after this manipulation, the charge indicator (red battery) appears on the screen, but the phone does not turn on, wait until the charge level reaches at least 5%.

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If the charging indicator flashes red, it is a sign of a critical discharge, in which case leave the phone charging for at least 1 hour, even if the screen goes out a few seconds after you connect.

2. Forced reset (Hard Reset)

If the Redmi Note 9S is stuck on the logo, doesn't respond to touches or buttons, but the screen is turned on, forced reboot will help. This method resets all temporary data in RAM, but does not affect user files.

Follow the following sequence of actions:

Hold the power button for 20 to 25 seconds until the screen goes out.
If the screen is gone, release the button and wait 10 seconds.
Press the power button again for 1-2 seconds - the phone should turn on in normal mode.

If the device freezes during the boot phase (Redmi logo burns for more than 5 minutes), try the button combination:

🔘 Hold the power button. + Loudness up for 10-15 seconds.
🔘 If it doesn’t work, try the power button. + Loudness down.

What to do if the phone vibrates but does not turn on?

If you press the power button and you feel vibration, but the screen is still black, the problem may be the backlight of the display or the plume. Try to light the screen with a flashlight at an angle: if the image is barely noticeable, you need to repair the display module.

3. Enable via Recovery Mode (Recovery Mode)

If standard methods don’t work, the next step is to start in Recovery Mode, which is useful if the phone turns on but doesn’t load beyond the logo or reboots cyclically.

To log in to Recovery Mode on the Redmi Note 9S:

Turn off the phone (if it is turned on, perform a forced reboot as described above).
Press the Power button + Volume up at the same time.
Hold them until the Mi logo and recovery menu appear on the screen.

In the Recovery menu you will see several items (management is carried out by volume buttons, the choice is by the power button):

🔄 Reboot - a normal reboot.
📱 Wipe Data – reset to factory settings (deletes all data!).
🔧 Connect with MiAssistant – Connecting to a PC for Recovery.

First, select Reboot, which can solve the problem without losing data. If the phone doesn’t turn on again, go back to Recovery and select Wipe Data (but remember, this will delete all files, photos and apps!).

📊 How often do you experience a smartphone freeze?

Never.

Once a few months

Often, once a month.

Constantly, once a week.

4. Enable via Fastboot Mode (for advanced users)

Fastboot Mode is a mode for firmware and recovery of a smartphone via a computer. It is useful if the Redmi Note 9S does not even turn on in Recovery, but reacts to a connection to a PC.

To get into Fastboot:

Turn off your phone (if necessary).
Press the Power button + Volume down.
Hold until the image of a hare in a hat-eared hat (Fastboot logo) appears on the screen.

Next, you will need a computer with installed Xiaomi drivers and the Mi Flash Tool program. Connect the phone to the PC through USB-cable and follow instructions:

🖥️ Download the official firmware for Redmi Note 9S (model curtana from Xiaomi website.
📂 Unpack the archive with firmware in a folder without Cyrillic characters.
🔧 Launch the Mi Flash Tool, select the firmware folder and press Refresh – the program should detect your phone.
⚡ Press Flash and wait until the process is complete (it will take 5-10 minutes).

Important: Fastboot removes all data on your phone, including photos and messages, and if you didn't have a backup, your files will be lost forever.

Download the official firmware for curtana|Install Xiaomi drivers on PC|Connect your phone to Fastboot mode|Disable the antivirus (can block the Mi Flash Tool)|Backup of important data (if the phone is turned on somehow)-->

5. Battery problems and their solution

If the Redmi Note 9S doesn't show signs of life even after an hour of charging, the battery may be the problem.

Symptoms.	Possible cause	Decision
The phone does not respond to charging, the indicator does not burn.	Deep battery discharge	Use charging with current ≥2A for 1-2 hours
Charging indicator flashes red	Failure of the power controller	Try another charger or cable, contact the service
The phone is turned on only from charging, turns off when disconnected	Battery wear (capacity < 50%)	Replace the battery (cost) ~1500–2000 ₽)
The phone heats up when charging, but does not turn on	Short circuit in the battery	Disconnect from the network immediately, do not use it!

If the battery is swollen (this is noticeable by the raised back cover or the increased gap between the screen and the body), do not try to turn on the phone.

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If the phone doesn't turn on after a fall or a hit, never plug it into a charger, which can short circuit, and it's better to take it to the diagnostic service right away.

To check the battery status (if the phone is turning on at all), go to Settings → Battery status. If the capacity is below 80% of the original, it's time to think about replacing.

6. Hardware malfunctions: when to carry in the service

If none of the above methods worked, the problem is likely hardware, and here are the signs that self-repair is impossible:

💥 The phone fell into the water or was exposed to severe humidity (even if everything is dry on the outside).
🔥 On the motherboard, traces of burns or melted elements are visible.
🛠️ After disassembly, it is seen that the plumes of the display or buttons are torn off.
🔋 The battery is swelling or deformed.

The average cost of repairing Redmi Note 9S in service centers:

🔧 Battery replacement: 1500–2500 ₽.
📱 Display replacement (with touchscreen): 4000–6000 ₽.
🔌 Maintenance of the motherboard: from 3000 ₽ (dependant).
💧 Cleaning after liquid ingestion: 2000–4,000 ₽.

If the phone is warranty – contact the official service center Xiaomi. Otherwise, choose workshops with good reviews (check on Yandex.Maps or 2GIS).

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Before visiting the service, back up your data if your phone is switched on at all. Use the Backup function in Settings → System → Backup or connect to your PC in Fastboot mode to save important files.

7. Frequent User Errors and How to Avoid Them

Many of the issues with the Redmi Note 9S are caused by user misconduct, and here are the most common errors:

⚠️ Warning: Never use non-original chargers with an output current greater than 2.4A – this can damage the power controller and result in a total battery failure.

Top.-5 Mistakes in trying to turn on the phone:

🔌 Use of damaged USB-cable (broken wires inside the flatbed).
⚡ Try to turn on the phone immediately after connecting to charge (you need to wait at least 10-15 minutes).
🔄 Pressing the power button multiple times in a panic (this can make the failure worse).
📴 Self-disassembly of the phone without experience (risk of damage to plumes).
🔋 Keeping your phone discharged for more than a month (battery loses capacity).

If you suspect that the phone is not turning on due to a virus or malware, try booting into Safe Mode.

Hold the power button until the off menu appears.
Press and hold the item Turn off power.
In the window that appears, confirm the transition to Safe Mode.

In Safe Mode, only system applications are running, and if the phone is on, there's a problem in one of the apps installed, remove suspicious programs, and restart the device.

FAQ: Answers to Frequent Questions

The phone vibrates when you press the power button, but the screen is black. What do you do?

This is a sign that the phone is trying to turn on, but can't initialize the display. Try: Connect the phone to the PC — if the computer detects it, the problem is to illuminate the screen; illuminate the screen with a flashlight at an angle — if the image is barely noticeable, the plume or backlight is defective; reset through Recovery (but this will delete all data). If nothing helps, bring it to the service for the diagnosis of the display module.

Can I turn on the Redmi Note 9S without a power button?

Yes, but only if the button is mechanically functional but does not respond to the press: 🔌 Connect your phone to charge – some models turn on automatically when a certain level of charge is reached. 🖥️ Connect to the PC and use the adb reboot command (you need to turn on). USB Debugging). 🔧 If the button is broken physically, a flexible plume (cost) must be replaced. ~1500 ₽).

The phone turns on, but it turns off.

It's a typical symptom: 🔋 Heavy-worn battery (capacity) < 20%). 🔌 Faulty power controller. 📱 Firmware failure after a failed update. Try: Swipe your phone through Fastboot (instruction above); Replace your battery; check your phone for short circuit.

How do you know if your phone is broken and not just dead?

Signs of hardware breakdown: 🔥 The phone is heated even without charging. 💨 The device emits a chemical smell (burnt plastic or electrolyte). 🔌 When connected to charging, a crackling or hissing can be heard. 📵 The phone is not detected by the computer, even in Fastboot. In these cases, self-repair is dangerous - contact the specialists.

Can I recover data if my phone is not turned on?

The chances are there, but they depend on the cause of the breakdown: 📱 If your phone is responsive to charging or PC, try retrieving data via Fastboot or Recovery using programs like Dr.Fone or Tenorshare. 4uKey. 🔧 If the problem is in the display or plume – the wizard in the service can connect your battery and motherboard to the work screen to copy data. 💾 If the phone is completely dead, data recovery is possible only by soldering the memory chip (expensive, ~10 000 ₽, And it doesn't guarantee 100% success. "" Importantly, the sooner you start, the better the chances of success!