Xiaomi Redmi Note 8 overheats: how to quickly cool your smartphone

Xiaomi Redmi Note 8 is one of the most popular budget smartphones, but its owners often face the problem of overheating, especially in the summer, during games or heavy use of the camera. Overheating not only reduces performance, but can damage the battery or internal components. In this article, we will analyze the causes of heating and give 10 proven methods of cooling, from simple to radical.

It's important to understand that the Redmi Note 8 is equipped with a Snapdragon 665 processor that is prone to heat at high loads. However, if the phone is warming even in standby mode, it's a signal of possible malfunctions. We'll look at both software methods (settings, applications) and hardware methods (cooling accessories, disassembly).

Why Xiaomi Redmi Note 8 is warming up: the main reasons

Overheating of the Redmi Note 8 can be caused by external factors, as well as internal failures.

• 🔥 High load: games (PUBG Mobile, Genshin Impact, video shooting in 4K, multitasking.
• 🌡️ External temperature: use in the sun, in a sauna or near heaters.
• 🔋 Battery problems: battery wear (capacity below 80%), use of non-original RAM.
• 🛠️ System pollution: dust in the charging connector, the thermal paste on the processor dried up (relevant for phones over 2 years old).
• 📲 Problem apps: viruses, background processes (Facebook, TikTok are often guilty).
• 🔄 Outdated software: errors in firmware MIUI, Lack of security updates.

To determine the cause, check the temperature through the hidden menu of engineering settings.

1. Open the Phone app.
2. Enter the combination: ##4636###.
3. Go to the Battery Information tab – the current temperature is displayed there.

The critical temperature for the Redmi Note 8 is 50°C or higher. At 55°C, an emergency shutdown is triggered. If your phone heats up to such values for simple tasks (calls, messengers), this is cause for concern.

Software methods of cooling: without disassembling the phone

Start with the simplest methods – they don’t require special skills and often solve the problem.

1. Close the background applications

Many programs continue to run in the background, loading the processor to close them:

• 📱 Click on the recent apps button (square at the bottom of the screen).
• 🧹 Swipe up each app or click Close everything.
• 🚫 For aggressive apps (Facebook, Instagram) disable autorun in Settings → Annexes → Permits → Auto-start.

2. disable unnecessary functions

Some Redmi Note 8 modules are actively powering and heating the phone:

• 📶 5G/Wi-Fi/Bluetooth: Turn it off if you're not using it. Especially for Wi-Fi Direct and the hotspot.
• 📍 Geolocation: Limit access to unnecessary applications in Settings → Confidentiality → Permits → geodata.
• 🔦 Autobrightness: set fixed brightness to 50-60%. Automatic adjustment makes the processor work constantly.

3.Use the performance mode

MIUI has a hidden performance limitation feature that reduces the load on the processor:

1. Go to Settings → Battery and Performance → Performance Mode.
2. Choose Balanced or Energy Saving.
3. Activate the option to limit background activity.

This will reduce FPS in games, but the temperature will drop by 5-10°C.

4. Update firmware

Xiaomi regularly releases patches to optimize power consumption.

1. Open Settings → About the phone → System update.
2. If a new version of MIUI is available, install it.
3. After the update, reset the settings (Settings → Additional → Resetting).

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If the phone warms up after the update, roll back to the previous version via Fastboot. Instructions are on the 4PDA forum in the topic about Redmi Note 8.

Hardware methods: when software does not help

If the phone is warming even after optimizing settings, it’s time to move on to more radical measures.

5 Cooling cover or radiator

Special accessories help to remove heat from the body:

• ❄️ Case with gel filler: absorbs heat, but requires "charging" in the refrigerator (the effect is maintained) 1-2 hour).
• 🧊 Metal radiator: glued to the back cover, passively dissipates heat. Best models are Arctic Cooling or Baseus.
• 💨 Smartphone fan: connects to USB-Type C, actively blows the case.

For the Redmi Note 8, a heatpaste radiator will work, and you need to glue it to the CPU area (under the lid), and the effect is that the temperature decreases by 8-12 ° C when playing games.

6. Cleaning connectors and replacing thermopaste

If the phone is older than 2 years, the heat paste on the Snapdragon 665 processor could dry out.

1. Remove the back cover (need a mediator and a hair dryer to soften the glue).
2. Clean the old paste with alcohol.
3. Apply a new thermopaste (Arctic MX-4 or KPT-8).
4. Get your phone together, check the leaks.

⚠️ Attention: Disassembling the phone is not warranty. If you are not sure about your skills, contact the service!

Also check the charging connector for dust and oxidation. Clean it with a toothpick or compressed air.

Replacement of the battery

A worn-out battery (<80% of its original capacity) warms up when charging and discharging, and you can check the status of the battery through the AccuBattery app (Shows Health). If the value is below 80%, you need to replace it.

The cost of the original battery for the Redmi Note 8 is about 1500-2000 rubles. Do not buy cheap analogues: they can swell or ignite.

Emergency measures: how to quickly cool your phone

If the Redmi Note 8 has already overheated and turned off, follow the algorithm:

1. Turn off the phone and remove it. SIM-memory-card.
2. Place in a cool place (but not in the fridge! a sharp temperature drop is harmful).
3. Blow with a fan from the back cover (do not direct the air flow into the connectors!).
4. Do not turn on until the temperature drops below 40°C (check through the engineering menu).

⚠️ Warning: Never cool your phone with a wet cloth or ice! this can cause a short circuit due to condensation.

If the phone does not turn on after overheating:

• Connect to the charge for 30 minutes.
• Try to press the Power button + Volume Up for 10 seconds.
• If it doesn’t help, bring it to the service (possibly the power controller burned).

Preventing overheating: How to avoid problems in the future

To make sure that the Redmi Note 8 doesn’t get warm, follow the following simple rules:

• 🔄 Regularly update the software – Xiaomi optimizes power consumption in new versions MIUI.
• 🎮 Play with restraint FPS: In the settings of the schedule, choose 30-45 staffing 60.
• ☀️ Avoid direct sunshine: Don't leave your phone on the dashboard of your car.
• 🔋 Use the original RAM: non-original charges can give unstable voltage.
• 🧹 Clean your phone from dust once in a while. 3-6 months (especially the charger connector).

It is also useful to calibrate the battery:

1. Discharge the phone to 0% and turn it off.
2. Charge to 100% without interruption.
3. Repeat the cycle 2-3 times.

This helps the power controller to more accurately determine the charge level and reduces heating when charging.

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Regular cleaning and software updates prevent 70% of overheating. Don't neglect prevention!

Frequent questions about overheating Xiaomi Redmi Note 8