Xiaomi Redmi Note 12 is one of the most popular smartphones of 2023, but even with it, there can be situations when the device refuses to turn on. The reasons are different: a complete battery drain, a software failure after an update, mechanical damage or improper shutdown. In this article, we will discuss all possible ways to turn on the Redmi Note 12 (including 4G, 5G and Pro models), and give recommendations on how to avoid repeated problems.
It's important to understand that the algorithm of actions depends on the current state of the smartphone: whether the charging indicator flashes, whether the screen reacts to the connection to the charger, whether there was a firmware manipulation before it. We will look at both basic methods (long pressing the power button) and advanced ones - through Fastboot or Recovery Mode. If your Redmi Note 12 does not show signs of life, do not panic - in 90% of cases it can be returned to work without contacting the service center.
1. Standard turn on: what to do if the smartphone does not respond to the power button
So, to start with, the simplest thing is to try to turn on the Redmi Note 12 in the standard way, and most of the time, the problem is a dead battery or a temporary freeze.
- 🔌 Connect your smartphone to the original charger (preferably from Xiaomi with Quick Charge 3.0 support).Using poor-quality cables or adapters can cause charging to go extremely slow or never to start.
- ⏱️ Leave the device on charge for at least 20-30 minutes. Even if the indicator does not burn, the battery could discharge to such a level that the power controller blocks the switch on.
- 🔄 After recharging, press the power button for 10-15 seconds. On Redmi Note 12 Pro models+ Sometimes you need to hold the button for up to 20 seconds – this is due to the features of the firmware MIUI 14.
- 📱 If the screen is still black, but you feel vibration or hear the charging sound, try pressing the Power combination. + Volume Up for 5-7 seconds, which can wake the device from sleep mode.
If the Redmi Note 12 still doesn't turn on after this manipulation, move on to the next section.
Charger is working (check on another phone)|
Cable undamaged (try another)|
The socket is good (plug in another device) |
The power button is not locked or damaged.-->
Important! Redmi Note 12 5G and Pro models sometimes work with overheating protection. If the smartphone has been lying in the sun for a long time or near a heat source, let it cool for 10-15 minutes before turning on.
2. Forced reboot: when the smartphone is stuck on the logo or black screen
If the Redmi Note 12 starts to turn on (the MI or Redmi logo lights up), but the process does not go further, this is a sign of a software failure.
- 🔄 Failed update MIUI (especially if the process is interrupted).
- 📱 Installations custom firmware or mod (for example, through TWRP).
- 🛠️ Incorrect resetting of settings (Hard Reset).
- 🔋 Critical battery discharge (below 3%).
In this case, a forced reboot (called Hard Reboot) will help.
- Turn off the smartphone from charging (if it was connected).
- Press the Power and Volume Up buttons at the same time.
- Hold them for 15-20 seconds until the screen goes out and reboots.
- If nothing happens, try the Power + Volume Down combination.
Some Redmi Note 12 firmware may have a Fastboot Mode menu (a black screen with a green Android robot labeled Fastboot) that's OK, just select Reboot with the volume buttons and confirm the power button.
Updates to MIUI|
Installation of the annex |
Battery discharge |
Other causes-->
⚠️ If the smartphone freezes on the logo again after a forced reboot, this may indicate damage to system files, in which case you will need to flash it through Fastboot or Recovery.
3. Enable via Recovery Mode: Resetting and Recovery
If standard methods don't work, the next step is to download to Recovery Mode.This is a special recovery mode that lets you reset settings, clear the cache, or install the update manually. To log into Recovery on Redmi Note 12:
- Turn off your smartphone (if it’s on, press the Power for 10 seconds).
- You can also use both Power and Volume Up.
- Hold the buttons until the MI logo appears, then let go.
- In a few seconds, you’ll see the Recovery menu (a blue screen with items in English or Chinese).
The following options are available in the Recovery menu (movement – with volume buttons, choice – with a power button):
| Item | Description | When to use |
|---|---|---|
| Reboot | System restart | If the smartphone is frozen, but previously worked normally |
| Wipe Data | Reset to factory settings (delete all data!) | If the device does not boot due to viruses or software errors |
| Wipe Cache | Clearing the cache (does not delete personal data) | If the smartphone is slowing down or hanging on the logo |
| Apply update | Installation of updates with SD-map | If there are firmware files (.zip) on the memory card |
If you choose Wipe Data, all data (photos, contacts, apps) will be deleted! Before you try other methods, such as cleaning the cache (Wipe Cache), after reset, the smartphone will restart and should turn on in standard mode.
What to do if you use Recovery Mode in Chinese?
4.Inclusion via Fastboot: for power users
Fastboot mode is an engineering menu that lets you reflash your smartphone, unlock your bootloader, or restore your system.
- 🔧 Redmi Note 12 doesn’t turn on even after resetting via Recovery.
- 📦 You need to install a custom firmware or core.
- 🔓 You need to unlock the bootloader (Bootloader).
To get into Fastboot:
- Turn off your smartphone.
- Press Power + Volume Down for 5-10 seconds.
- Release the buttons when the screen with a green Android robot and the words Fastboot Mode appears.
Further actions require connecting to a computer and using utilities like Mi Flash Tool or ADB. For example, to reflash your smartphone through Fastboot, you will need:
fastboot flash boot boot.img
fastboot flash system system.img
fastboot rebootOn the Redmi Note 12 with Snapdragon 4 Gen 1 (5G-version) unlocking the bootloader may lead to loss of warranty and data reset DRM (For example, Widevine keys L1 viewable HD-content).
⚠️ Attention! Wrong commands in Fastboot can turn your smartphone into a brick. If you're not sure what you're doing, you'd better go to the service center.
5. Battery problems: when the smartphone does not turn on even from charging
If the Redmi Note 12 doesn't respond to charging and doesn't turn on, the problem could be in the battery or power controller.
- 🔋 Try another charger (preferably with Quick Charge support) 3.0/4.0). Poor-quality adapters may not provide enough current to start.
- 🔌 Connect your smartphone to your computer through USB. If the computer makes the connection sound, but the screen remains black, the problem is the display or plume.
- 🌡️ Check the temperature of the case. If the smartphone is cold, it's possible that the battery is completely discharged and the controller is blocking charging.
- 🛠️ If after a long charge the indicator does not burn, it is possible that the connector is damaged. USB-C Or battery plume. It needs repair.
Redmi Note 12 Pro+ models with a 5000 mAh battery sometimes work with deep discharge protection, in which case it can help to connect to charging through another cable (for example, from a MacBook or iPad, which give more current).
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If the charging indicator flashes red, it means that the battery is discharged to a critical level. Leave the smartphone on charging for 30 to 40 minutes, then try to turn it on while holding the Power + Volume Up.
6. Hardware malfunctions: when to carry in the service
If none of the above methods worked, it's likely a hardware problem, and here are signs that the smartphone needs repair:
- 💥 Falling from a height or getting moisture (even if there is no external damage).
- 🔥 Overheating of the body (especially in the area of the processor or battery).
- 🔌 No response to any chargers (including original chargers).
- 📱 Display damage (cracks, broken pixels, lack of backlighting).
- 🔊 No vibration or sound when connected to charging.
In these cases, self-employed power-up attempts can make the problem worse, for example, if the power controller is damaged, continuing to charge with a poor-quality adapter can disable the motherboard.
| Type of malfunction | Cost of repair (₽) | Date(s) |
|---|---|---|
| Battery replacement | 1 500 – 2 500 | 1 |
| Repair of the USB-C connector | 1 200 – 2 000 | 1–2 |
| Replacement of the display (with touchscreen) | 4 000 – 7 000 | 1–3 |
| Diagnosis of the motherboard | 500 – 1 500 | 1–5 |
If your Redmi Note 12 is warranty-free, don’t try to disassemble it yourself – this will void warranty obligations. Official Xiaomi service centers in Russia and the CIS usually repair smartphones within 3-7 days.
7.Prevention: How to avoid inclusion problems in the future
To ensure that Redmi Note 12 does not refuse to turn on, follow these recommendations:
- 🔋 Keep the battery from running below 10%. Regular deep discharge reduces battery life.
- 🔄 Update. MIUI Only through official channels (Settings) → The phone. → Updating the system).
- 🛡️ Install a reliable antivirus (such as Avast or Kaspersky) to avoid malware infection.
- 📱 Avoid mechanical damage: use a cover and protective glass.
- 🌡️ Do not leave your smartphone in the cold (below -10)°C) or in a hot place (above) +40°C).
It's also useful to periodically clean the system cache.
- Go to Settings → Memory → Cleanup.
- Choose Clear Cache (not to be confused with Clear All Data!).
- Reboot your smartphone.
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Regular cleaning of cache and software updates reduce the risk of freezes and software failures by 70%.