How to Optimize Xiaomi Phone: A Complete Guide to Accelerating and Setup

Xiaomi smartphones based on MIUI They are known for their rich functionality, but over time, even flagship models like the Xiaomi 14 Ultra or the budget Redmi Note 13 begin to “slow down”, the reasons are diverse, from overloaded memory to suboptimal system settings. This article will not just list standard tips like “clean up the cache”, but will reveal deep settings. MIUI, Hidden features and current optimization methods for 2026.

We have analyzed user reviews, performance tests, and official Xiaomi guidelines to gather unique optimization methods that are not found in typical guides. For example, you will learn how to turn off background processes that eat up to 30% of battery power, or how to turn on hidden “performance mode” for games. POCO X6 Pro to Redmi. 12C, including devices on HyperOS (new firmware that has replaced the new one) MIUI).

Importantly, optimization is not a one-off, it's a systematic approach, and we'll break it down into logical blocks, from basic settings to advanced tweaks for power users, and if your phone has slowed down after an upgrade or just over time, here's the solution.

1. Diagnostics of the current state of the phone

Before optimizing, you need to understand what exactly is slowing down your Xiaomi.

• 📊 MIUI Security (Optimization tab): shows busy memory, overheating applications and background processes. → Annexes → Security → Optimization.
• 🔋 Battery: in the section "Battery use" (Settings) → Battery) see which applications use up charge in the background, up to 5% per hour when inactivity.
• 📉 DevCheck (app from Play Market): displays processor temperature, RAM load and state of the drive. Critical values: temperature above 50°C, RAM loading >80%.

Pay attention to the symptoms:

- Freezes when opening a camera or gallery → Problem with storage or camera drivers.

- Lags in games at low processor temperature → performance limitation in battery settings.

- Self-involved reboots → Possible malfunction of firmware or overheating.

If you see in DevCheck that RAM is loaded 90% when closed applications, this is a sign of memory leakage – a typical problem for the computer. MIUI 14 or earlier Solution: Forced reboot or cache reset (more on this below).

⚠️ Warning: If the phone overheats above 60°C without load (e.g., standby), this may indicate a hardware malfunction. Software optimization will not help here - diagnostics are required in the service center.

System Cleanup: What Can Be Removed Without Risk

The first step is to free up space, but not all files can be deleted without consequences, and we'll figure out what's safe to clean and what's not.

For deep cleaning, use a combination of built-in tools and third-party utilities:

1. MIUI Security → Deep Cleanup (Deletes Temporary Files and Residual Data).

2. SD Maid (from Play Market) – Finds junk files that are MIUI see.

3. Settings → Annexes → Application management → Size filter – remove unused programs.

Remove the cache in Settings→Warehouse|

Clean Download folder from old files|

Check out large files in the gallery (video) >500MB)|

Remove unused applications through MIUI Security|

Run a deep cleanup in SD Maid-->

Pay special attention to the folder MIUI/Backup — It stores backups of applications that can take up to several gigabytes. If you don't use the backup function, feel free to delete the contents of the backup function.

⚠️ Attention: Do not delete the folder MIUI/Camera manually, this can cause camera malfunctions. Use only the built-in Gallery to clean photos and videos.

3. MIUI Optimization: Hidden Settings and Tweaks

MIUI It contains dozens of hidden features that you can use to speed up your phone, most of which are not dokument, but are actively discussed in forums like this. XDA Developers.

Here are the 5 most effective tweaks:

• 🚀 Performance mode for games: enable in Settings → Special facilities → Game mode → Graphics. Select "High Performance" (available on the POCO F5, Redmi K60 newer).
• 🔄 Disable animation: reduces delays when switching between screens. Activated via Settings → The phone. → Version. MIUI (Tap 7 times, then return to "More" → For developers → Speed of animation: 0.5x).
• 📵 Limitation of background processes: c For developers → Process limit select "Maximum 2 Process" to reduce RAM consumption, but some applications will reboot when returned.
• 🔋 Disabling Battery Optimization for Key Applications: Settings → Battery. → Optimizing the battery → Select applications (for example, messengers).
• 🌐 Shift. DNS: Use 1.1.1.1 (Cloudflare) or 8.8.8.8 (Google) to speed up the Internet. → Connections → Private DNS.

For models on HyperOS (for example, Xiaomi 14) an additional tweak is available:

- Go to Settings. → Screen. → Screen resolution and select FHD+ instead QHD+, If you don't notice a difference in quality, it'll reduce the load on the GPU.

If after using tweaks the phone began to work unstable (for example, applications began to close), return the settings to the original state or reset the cache through Settings. → Memory. → Clearing the cache.

4. Battery optimization: how to extend autonomy

One of Xiaomi's biggest problems is fast battery drain, and it's aggressive optimization. MIUI, This is a very common way to work against the user:

• 🔌 Turn off Fast Charging overnight: Constant use of fast charging (>30W) reduces battery life. c Settings → Battery. → Charging settings select "Standard Charging" from 22:00 to 7:00.
• 📡 Limit background activity: in Settings → Battery. → Battery use: Turn off background activity for social networks and instant messengers (except for the main ones).
• 🌙 Adaptive brightness with correction: in Settings → Screen. → Adaptive brightness turn on “Smart correction” – this will reduce brightness in dark rooms without loss of visibility.
• 📶 Switch to 4G instead 5G: If you are not using ultra-fast internet, go to Settings → SIM-maps and mobile networks → Preferred type of network → LTE.

For models with AMOLED-screens (e.g. Xiaomi) 13T) Turn on a dark theme and install black wallpaper - this will reduce energy consumption on the wall. 10-15%. Download the wallpaper from the collection AMOLED Black Wallpapers at Play Market.

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If your phone is running out of more than 10% overnight, check the apps in the Settings section. → Battery. → Battery utilization → Frequent culprits: Facebook, TikTok and Mi Video (remove or limit their background activity).

For advanced users, use the AccuBattery (Play Market) app to calibrate the battery, and after 5 charging/discharge cycles, it will show the actual battery capacity and help optimize the charging process.

5. Accelerating Games and Graphics Applications

If your Xiaomi is slowing down in games (Genshin Impact, Call of Duty Mobile), the problem may be restrictions. MIUI. Here's how to take it off:

1. Enable Game Turbo mode: - Path: Settings → Special facilities → Game Mode. – Select “Performance” and activate “Graphics” +».
2. Turn off the restriction FPS: - In the same Game Mode menu, find “Restriction of Human Resources” and select “No Limitations».
3. Use GPUFreq (requires root): - The utility allows you to overclock the GPU on 10-15%. Download from XDA Developers.
4. Clear the graphics driver cache: - Go to Settings → Annexes → Application management → Systemic → Graphic driver → Warehouse → Clear the cache.

For POCO F5 redmi K70 extra tweak available:

- B Settings → Screen. → Select the refresh rate 120 Hz (if supported) and activate Adaptive Frequency to automatically switch between 60/120 Hz.

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On phones with a Snapdragon processor 8 Gen 2 (for example, Xiaomi 13 Pro) Enabling Performance Mode in Game Turbo Increases FPS play-play 20-30%, It reduces the time of autonomous operation 15-20%. Use it only when connecting to a charger.

If the game is still stalling, check the temperature of the processor through DevCheck (>55°C) activate the cooling:

Use a game cooler (such as Black Shark Cooling Fan).

- Take off your case during the game.

Reduce the graphical settings in the game.

6. Network optimization: Wi-Fi, mobile internet and Bluetooth

Slow internet on Xiaomi is often not linked to the provider, but to the phone’s settings.

• 📶 Resetting network settings: Settings → Connections → Resetting Wi-Fi, mobile network and Bluetooth settings, which removes saved passwords but solves connection problems.
• 🔄 Switching between 2.4 GHz and 5 GHz: - 5 GHz is faster but has a shorter range. – In router settings, assign different networks names (e.g., different names, MyWiFi_2G and MyWiFi_5G) And connect to the right one manually.
• 📡 Turning off automatic switching Wi-Fi/Mobile data: - Path: Settings → Connections → Wi-Fi → Additionally. → Switch to mobile data automatically (turn off).
• 🔗 Use of the VPN To circumvent restrictions: - Some providers are throttling traffic for Xiaomi. VPN (For example, ProtonVPN can speed up the download.

To improve the signal of the mobile network:

1.B Settings → SIM-maps and mobile networks → Select Manual and connect to your carrier’s network (e.g, MTS-RU versus automatic choice).

2. If the signal is weak, activate only 4G In network settings, this stabilizes the connection.

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If internet speeds drop when connecting to public Wi-Fi (such as in a cafe), try changing the speed of your internet. MAC-Phone address. → Connections → Wi-Fi → Additionally. → Private. MAC-address select "Random".

For devices with HyperOS, the Smart Connection function is available (Settings) → Connections → Smart connectivity. It automatically switches between Wi-Fi and mobile data depending on the signal quality. However, in some cases, this leads to connection breakdowns — turn it off if you notice problems.

7. Update firmware and reset to factory settings

If all the optimization methods didn't work, the brakes could be caused by outdated or damaged firmware. MIUI or HyperOS correctly:

1. Check the current version: - Path: Settings → The phone. → Version. MIUI. - Current versions for 2026: MIUI 14.0.5+ or HyperOS 1.0.3+.
2. Update through OTA: - Settings → The phone. → System Update. - If the update doesn't come, check manually by clicking on the three dots in the upper right corner.
3. Install the firmware manually (if you have to). OTA Not working: - Download the firmware for your model from the official Xiaomi website. - Rename the file to update.zip and place it in the root folder of the phone. - In System Update, click on three dots. → «Select the update file».

If after the update the phone began to work worse, reset to factory settings:

1. Make a backup: Settings → Additionally. → Backup and reset → Local backup.

2. Perform reset: Settings → Additionally. → Backup and reset → Resetting settings.

3. After restarting, restore the data from the backup (selectively, without unnecessary applications).

⚠️ Note: If you install firmware manually, make sure it is designed for your model and region (e.g. Redmi Note 12 Global vs Redmi Note 12 China).Installation of inappropriate firmware can lead to a phone “breakdown” (breakdown.

For power users: if after the update there are bugs (for example, the camera does not work), roll back to the previous version via Fastboot. XDA Developers for your model.

8 Hardware optimization methods

If the software methods didn't work, the problem could be hardware.

• 🔋 Thermopaste replacement: Over time, the thermopaste between the processor and the radiator dries up, leading to overheating. POCO X3, Redmi Note 10 and other active-cooled models are a pressing issue.Substitution costs: 1,000-1,500 ₽.
• 🛠️ Cleaning the charging connector: if the phone is not charging well, the cause may be contaminated USB-Use a wooden toothpick and alcohol to clean (not metal objects!).
• 📱 Battery replacement: If the battery runs out in 2-3 hours, its capacity likely has dropped below 70%.The original battery for Xiaomi costs 1,500-3,000 ₽ (model-wise).
• 🔄 Flashing through EDL: if the phone is not turned on or constantly restarted, it may require firmware in emergency mode (EDL This is a complex procedure that requires special cable and software (Mi Flash Tool).

To check the status of the battery, use the application CPU Throttling Test (Play Market) If the load test processor starts trottling (reduce frequency) at temperatures below 60°C, this is a sign of wear of the thermal paste or battery.

If you decide to replace the battery yourself, buy only original batteries labeled Xiaomi or certified analogues (for example, from the same battery). ZMI). Cheap Chinese copies can swell or ignite.

FAQ: Frequent questions about Xiaomi optimization