Why Xiaomi Redmi Note 8 is constantly rebooting and how to fix it

The Xiaomi Redmi Note 8 is one of the most popular smartphones in the budget segment, but even it is not immune to unpleasant surprises. One of the most annoying glitches is the endless reboot, when the phone spontaneously turns off and turns on in a loop, preventing normal use. The reasons can lie in software failures (from viruses to the firmware curve) and hardware problems (bloated battery, damaged board).

It's important to understand that if you start a reboot cycle after a fall, a humidity hit, or a severe heat wave, it's probably the hardware, and you can't do without a service center, but if you have a problem after you upgrade, install an app, or for no apparent reason, the chances of fixing it are much better, and we start with the safest methods and gradually move on to radical measures.

1. Causes of the constant reboots of the Redmi Note 8: diagnosing the problem

Before you jump into battle, you need to identify the root of evil, and here are the key triggers that most often cause a cyclical rebuke:

• 🔋 Battery: wear, bloat or short circuit. Redmi Note 8 is particularly sensitive to battery condition - when the capacity falls below 70%, failures can begin.
• 🤖 Firmware: Curved update MIUI, interrupted installation or unofficial assembly. Often the problem occurs after switching to MIUI 12.5+.
• 🦠 Viruses/applications: malware or conflicting software (especially optimizers, antiviruses, launchers).
• 🔥 Overheating: Dust-clogged cooling system, working under the sun or while charging with an unoriginal adapter.
• 🛠️ Hardware damage: falls, bumps, moisture ingress - all this can damage the motherboard or battery contacts.

How quickly do you identify the culprit?

• 🔄 The phone is reloaded only when charging. → problem in battery or power supply.
• 📱 Reboot occurs when a specific application is launched → software-fight.
• 🔥 Reboot is accompanied by strong heating → processor overheating.
• 🚫 The phone does not turn on beyond the logo. → Firmware failure or damage to the boot partition.

If the phone turns on for a while, try going to Settings. → The phone. → Version. MIUI And remember the current firmware, and that will help the later choose the right recovery method.

2. Software solutions: from cache reset to flashing

Start with the safest methods – they don’t require disassembling the phone and solve the problem in 60% of cases.

2.1 Cache reset via Recovery

This is the first step worth trying: The method doesn't delete user data, but clears temporary files that may be causing crashes.

Turn off the phone (press Power + Volume up for 10 seconds)

Wait for the vibration and release the buttons.

Make sure the battery is charged >30%-->

1. Turn off Redmi Note 8 (if it is in a cycle – wait for the switch off and immediately press the combination).
2. Squeeze the power. + Volume up 5-7 seconds until the Mi logo and Recovery menu appear.
3. Use volume buttons to navigate, select Wipe & Reset → Wipe Cache.
4. Confirm the action and wait until it's done. Reboot the phone.

If the phone turned on normally after this procedure, the problem was the damaged cache. If not, move on to the next step.

Removal of conflicting annexes

If the phone is even briefly booting, try to uninstall the recently installed programs.

• 🛡️ Antivirus (360 Security, Clean Master)
• 🎯 Launchers (Nova Launcher, Microsoft Launcher)
• 🔧 Optimizers (DU Speed Booster, CCleaner)
• 🎮 GameGuardian, Freedom (Freedom)

How to delete if the phone is not stable? Go to Safe Mode:

1. When turned on, hold the volume button until the Safe Mode sign appears.
2. Go to Settings. → Apps and remove suspicious programs.
3. Restart your phone in normal mode.

adb uninstall com.package.name

The list of packages can be obtained by the command adb shell pm list packages-->

Reset to factory settings

If previous methods have failed, you have to take drastic measures. Hard Reset will delete all data, but often saves from software glitches.

Method 1: Recovery (if the phone is not turned on):

1. Go to Recovery (as in 2.1).
2. Choose Wipe & Reset → Wipe All Data.
3. Confirm the action and wait for the completion.

Method 2: Through settings (if the phone is turned on):

1. Go to Settings → About the phone → Reset settings.
2. Choose Delete all data and confirm.

💡

After reset, do not restore data from the backup immediately! First check the stability of the phone in a "clean" state for 1-2 days.

Fastboot flashing

If the reset doesn't work, the last software method is complete firmware. USB Type-C and official firmware for Redmi Note 8 (codenamed Ginkgo).

Instructions:

1. Download the firmware from the official Xiaomi website (select the Fastboot version for ginkgo).
2. Unpack the archive in a folder on the disk C:\ (for example, C:\MiFlash\).
3. Install the Mi Flash Tool and ADB drivers.
4. Turn off the phone and press Power + Volume down to log into the Fastboot.
5. Connect your phone to your PC and launch the Mi Flash Tool. Select the firmware folder and press Flash.

It takes 5-10 minutes. Don't turn off your phone while you're running the firmware, it can lead to "bricking" (completely inoperable)!

3. Hardware problems: battery, board, contacts

If the software methods didn't work, the problem is the hardware, and here are the most common hardware causes and ways to diagnose them:

Checking of the battery

The Redmi Note 8 has a 4,000 mAh battery, but it wears out over time.

• 🔋 The phone reboots at a charge level of 30-50% (real capacity is lower).
• 🔥 The case swelled or there was a gap between the screen and the back cover.
• 🔌 Reboots only occur when charging or disconnecting from the network.

How to check:

1. Open the back cover (a mediator or plastic card will be required).
2. Check the battery for bloating. The normal battery is flat, no bumps.
3. Check the battery contacts – they should be clean, without oxidation.

If the battery is normal but the phone still reboots when charging is connected, the problem may be the power controller on the motherboard.

Diagnostics of the motherboard

Board damage often occurs after falls, moisture or overheating.

• 🔥 The phone is very warm even in simple.
• 🔌 Reboots occur when connected to a charge or load (games, videos).
• 📵 No response to buttons or sensors.

Self-diagnosis:

1. Check the board for darkening, burnt elements, corrosion (especially near the charging connector).
2. Make sure all plumes (display, cameras, buttons) are tightly connected.
3. Call the main circuits with a multimeter (if you have skills).

Typical malfunctions of the Redmi Note 8 board:

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If the board is damaged, self-repair can make the problem worse, and it is cheaper and safer to replace the motherboard in 80% of cases. ~3-5 thousand rubles).

Problems with the charging connector

Oxidized or damaged contacts USB Type-C can cause short circuits that cause the phone to reboot:

1. Connect the charger and move the cable a little, and if the phone reacts (charges/reboots), the connector is the problem.
2. Inspect the port with a flashlight: contacts should be clean, without green coating (oxidation).
3. Try charging your phone with another cable and power supply.

Decisions:

• 🧹 Clean the connector with a toothpick (carefully!) or compressed air.
• 🔧 If the contacts are oxidized, wipe them with an alcohol solution (at least 70%).
• 🛠️ In case of mechanical damage (for example, broken contacts) - only replacement of the connector.

4.Overheating: Why the Redmi Note 8 shuts down from high temperature

Snapdragon 665 in Redmi Note 8 is prone to overheating, especially under intense load (games, video shooting) 4K, Multitasking: If the processor temperature exceeds 85-90°C, the phone is forced to shut down for protection.

How to check the temperature:

1. Install the AIDA64 or CPU Monitor app.
2. Run a performance test or just play a heavy game for 10-15 minutes.
3. Look at the temperature of the processor cores and the battery.

Normal values:

• 🌡️ In plain: 30-40°C.
• 🎮 Under load: 50-70°C.
• ⚠️ Critical temperature: >80°C (risk of shutdown).

How to lower the temperature:

• 🧊 Remove the case (especially silicone) - it worsens the heat sink.
• 🔄 Limit background processes: disable auto-update applications, synchronize.
• 🎯 Lower the screen resolution to HD+ and limit FPS play.
• 🔧 Replace the heatpaste (requires disassembly of the phone).

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If the phone overheats even in simple, check the fan (if it is in your modification) or clean the cooling system of dust.

5.Recovery after a failed update or “bricking”

If the phone is stuck on the Mi logo, it reboots in the Fastboot cycle. → Recovery or not responding to the buttons, it's likely that the firmware has failed. EDL-Mode (Emergency Download Mode).

What you need:

• 🖥️ Windows computer 10/11.
• 🔌 The original cable. USB Type-C.
• 📦 Ginkgo firmware in.tgz format (download from Xiaomi Firmware Updater).
• 🛠️ Mi Flash Tool and Qualcomm 9008 Driver.

Instructions:

1. Turn off the phone (if it doesn’t respond, wait for the battery to run out).
2. Press Volume Up + Volume Down and connect the cable to the PC.The phone should be defined as a Qualcomm HS-USB QDLoader 9008.
3. Install the Qualcomm driver (if Windows doesn’t find it automatically).
4. Start the Mi Flash Tool, select the firmware and press Flash.
5. Wait for completion (10-15 minutes). The phone should automatically restart.

If the phone doesn’t respond even to EDL, The only option is repair in the service center using a programmer (for example, EasyJTAG).

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

Not all problems can be solved on their own, but here are some cases where you should consult a professional:

• 💥 Phone does not turn on at all (no reaction to charging, buttons, connection to PC).
• 🔥 On the board, darkening, burnt elements or traces of corrosion are visible.
• 🔋 The battery is swelling or leaking.
• 📱 More than 24 hours have passed since the fall or moisture hit, and the phone has not recovered.
• 🔧 Self-flashing didn’t help, and the phone is still in a reboot cycle.

How much will the repair cost:

Where to repair:

• 🏢 Xiaomi official service centers – a guarantee of 6-12 months, but more expensive by 20-30%.
• 🔧 Local workshops are cheaper, but check out reviews and experience with Xiaomi.
• 📦 Self-replacement (e.g. battery) – only if you have the skills and tools.

💡

Before you hand over your phone for repair, back up your data (if the phone turns on for even a short time) or remove your memory card. The service may reset your settings!

7.Prevention: How to Avoid Resets in the Future

To make the Redmi Note 8 work consistently, follow these guidelines:

• 🔋 Battery: Do not discharge below 10% and do not charge above 90% (optimal range for durability (18W) or Power Delivery certified. Avoid overheating while charging (do not play, do not watch video).
• 🤖 Software: Update MIUI Only through official channels (not beta!) Do not install custom firmware without experience. Clean the cache regularly in Settings → Warehouse → Clean up.
• 🛡️ Security: Do not install APK Use a reliable antivirus (Malwarebytes, Bitdefender) and disable the installation from unknown sources (Settings) → Confidentiality).

Also useful:

• 🧹 Once every 3-6 months, clean the charging connector from dust.
• 🔄 Backup important data (via Mi Cloud or Google Drive).
• 📦 Keep your phone in a shock-proof case (like the Spigen Tough Armor).

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To extend the life of the battery, enable the function of Optimized charging in Settings → Battery → Battery settings. It limits the charge to 80 percent at night.

FAQ: Frequent questions about Redmi Note reboots 8