Cookies are small files that websites and apps store on your device to store session, preferences and authorization data. on Xiaomi smartphones (including Redmi models, POCO and Black Shark) cookies accumulate in browsers, instant messengers and system services, which over time can lead to slowdowns, privacy leaks or authorization errors. For example, if you notice that sites constantly request re-entering logins, and advertising has become too “personalized” – this is a sure sign of overloaded cookies.
In this article, we will analyze all the ways to clear cookies on Xiaomi phones under control MIUI 14/15 (You will learn how to delete cookies in popular browsers (Chrome, Firefox, Mi Browser), system applications (Mi Account, Google Services) and even in hidden services that most users do not know about. We will pay special attention to safe cleaning – without loss of important data and disruption of accounts.
What are cookies and why should they be cleaned on Xiaomi?
Cookies (or HTTP cookies) are text files up to 4KB that are created by websites on the first visit.
- 🔑 Authorization data (login, session tokens)
- 🛒 Shopping cart in online stores
- 📊 Site display settings (language, theme)
- 🎯 Information for targeted advertising
On Xiaomi phones, cookies accumulate not only in browsers, but also in:
- 📱 System applications (Mi Account, Themes, Mi Video)
- 🤖 Google Services (Play Services, Google App)
- 💬 Messengers (WhatsApp, Telegram – store cookies of web versions)
- 🎮 Game Launchers (Game Center, Google Play Games)
Why is that a problem?
⚠️ Note: Overflowing cookies on Xiaomi may cause Mi Account malfunctions (e.g., the “Data Synced” error) and may also lead to leakage of personal information when using public Wi-Fi networks. In 2023, Kaspersky researchers found that 34% of Android data breaches were due to uncleaned cookies in browsers.
Method 1: Clearing cookies in the browser (Chrome, Mi Browser, Firefox)
Browsers are the main source of cookie accumulation. Mi Browser is installed on Xiaomi by default, but many users use Google Chrome or Mozilla Firefox. The instructions for each browser are different.
1.1 Cleaning up in Google Chrome
Open Chrome and follow the steps:
- Tap on three points (⋮) top-right → History.
- Choose Clear Data.
- Put the flags in: 📌 Cookies and website data 🗑️ Cached images and files (optional)
Clear the data
Close all tabs with important sessions (banks, social networks)
Save passwords in the manager (unless you use autocomplete)
Check that sync with your Google account is enabled
Turn it off. VPN (may block the cleaning)
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For selective cleaning of cookies of individual sites:
- Go to Chrome Settings → Confidentiality → Site settings → Cookies.
- Tap the site from the list → Delete.
1.2. Clean up in Mi Browser (standard Xiaomi browser)
Mi Browser is integrated into MIUI It has a unique cleaning interface:
- Open the browser → tap on three lines (☰) → History.
- Choose Clear Data.
- Mark it: 🍪 Cookies and website data 🗃️ Cash (optional)
Confirm the cleanup.
⚠️ Note: Mi Browser version below 13.5.20 (check Settings) → About the browser) clearing cookies may reset the dark theme settings on some sites. Update your browser before the procedure.
1.3 Cleaning up in Mozilla Firefox
Firefox offers more flexible settings:
- Tap it on three points. → Settings.
- Go to Deletion of Personal Data.
- Check Cookies and Active Logins.
- Press Clear Data.
For advanced users: in Firefox you can set up automatic cookie cleanup when you close:
- Settings → Confidentiality → Data management.
- Activate Clearing Private Data when you exit.
- Select cookies in the list.
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If after clearing cookies sites stopped opening, try to disable VPN shift DNS-server in Wi-Fi settings at 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).
Method 2: Delete cookies through settings MIUI (discharge)
If cookies are stored in system applications (Mi Account, Themes, Mi Video), they can be deleted via the menu. MIUI. This method does not affect user data (photos, contacts), but resets the settings of some services.
Instructions:
- Open Settings → Applications → Application Management.
- Tap on three points (⋮) → Show all the processes.
- Find an application (such as Mi Account) → Warehouse.
- Click Clear Data and Clear Cache.
| Annex | What's cleansed | Effects of consequences |
|---|---|---|
| Mi Account | Authorization cookies, synchronization tokens | You will need to re-enter your Xiaomi account |
| Themes | Theme settings, download cache | Resetting the applied themes of design |
| Google Play Services | Google service cookies, geolocation data | Push notifications may not work temporarily |
| Mi Video | View history, stream settings | Reset recommendations and bookmarks |
⚠️ Warning: Google Play Services data cleanup can cause sync errors with Google servers for 10-15 minutes.
What if after cleaning cookies stop working push notifications?
Method 3: Use of the “Privacy” regime in MIUI 14/15
In the firmware MIUI 14 and MIUI 15 there is a built-in tool for managing cookies and cache - "Privacy" mode. It allows you to clean data without deep interference with the system.
How to turn on:
- Go to Settings. → Privacy → Special permits → Application data management.
- Activate the Data Cleansing Slider when you lock the screen.
- Select the applications for which you want to automatically clear cookies (for example, browsers).
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The “Privacy” regime in MIUI 15 automatically clears cookies only for applications that have not been used for more than 30 days. Active applications (e.g. Chrome) require manual cleaning.
Method 4: Complete reset of cookies via Recovery Mode (for power users)
If cookies are “seated” in system partitions and are not deleted by standard methods, you can use Recovery Mode. This method is suitable for Xiaomi with an unlocked bootloader or root rights.
Warning: Mistakes in Recovery can result in data loss or device blinking. Use this method only if other methods have not worked.
Instructions:
- Turn off the phone.
- Press the Power button + Volume up until the Mi logo appears.
- In the Recovery menu, select Wipe & Reset. → Wipe Cache Partition.
- Confirm the action and restart the device.
What's cleansing:
- 🗃️ cache of all applications (including cookies)
- 📂 Temporary system files
- 🔄 Logs of error
What is NOT cleaned:
- 📸 Photos, videos, documents
- 📞 Contacts and communications
- 🎮 Game data (if not stored in the cloud)
⚠️ Note: Some Xiaomi models (e.g. Redmi Note 12 Pro)+) After cleaning the cache through Recovery, the fingerprint setting may reset. check the backup in advance in Settings → Xiaomi account → Cloud.
Method 5: Automatically clear cookies using third-party applications
If you need to clean cookies regularly but it is inconvenient to do it manually, you can use specialized utilities.We tested 5 popular applications on Xiaomi and selected the best ones.
| Annex | Functions | Pluses | Cons |
|---|---|---|---|
| CCleaner | Clearing cookies, cache, history | Intuitive interface, MIUI support | Advertising in the free version |
| SD Maid | Deep cleaning of system files | Works without root, clears cookies in games | A complex interface for beginners |
| Files by Google | Cleaning cache and unnecessary files | Official from Google, secure | Does not clear cookies in system applications |
| Clean Master | Optimization of memory, cleaning of cookies | Automatic cleaning on schedule | Aggressive advertising can slow down the system |
Recommendations for use:
- 🛡️ Before installing, check the application permissions in Settings → Annexes.
- 🔍 Do not use "optimizers" that request access to Special Features.
- 📊 Set up automatic cleaning for times when your phone is not in use (e.g. at night).
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Annex SD Maid can clear cookies even in games (e.g. Genshin Impact or PUBG Mobile, which is useful if the game started to "lag" due to overcache, but after cleaning it may require rebooting resources (up to 1-2 GB).
Frequent errors in cleaning cookies on Xiaomi and how to avoid them
Many users face problems after clearing cookies. Consider typical errors and their solutions.
Error 1: “I was unable to log in to Mi Account after clearing the cookie”
Reason: Authorization tokens have been removed.
Decision:
- Check your Internet connection.
- Go to Settings. → Xiaomi account → Come in again.
- If you ask SMS-code, but it does not come, switch to the entrance by email.
Mistake 2: Websites are constantly requesting captcha
Reason: The cookies responsible for verification have been deleted.
Decision:
- Temporarily shut down. VPN.
- Clear cookies only for the problematic site (in the browser settings).
- Update your browser to the latest version.
Error 3: Notifications in messengers have stopped working
Reason: Google Play Services or Firebase cookies have been cleared.
Decision:
- Open a messenger (such as WhatsApp).
- Go to Settings. → Notifications → Turn on.
- Wait for the re-registration in FCM (It takes up to 1 hour).
Error 4: Theme settings are dropped in MIUI
Reason: Themes application cookies have been cleared.
Decision:
- Go to Settings → Themes.
- Select the theme again (it will be saved in the cloud if you have signed in to Mi Account).
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If after cleaning the cookies the phone started to warm or discharge quickly, check the activity of background processes in Settings → Battery → Battery use. Some applications may be trying to recover deleted data.