How to Delete All Messages on Xiaomi 8: The Complete Guide

Owners of the popular Xiaomi Mi 8 smartphone often face a lack of free space, which is gradually filled with system debris and user data. One of the most subtle but voluminous sources of “heaviness” in the device’s memory are text messages accumulated over the years. They can take up a significant amount, especially if you actively use SMS messages to obtain confirmation codes from banks and services. Cleaning this section is the first step to speeding up the gadget and freeing valuable megabytes.

The MIUI deletion procedure can be confusing for a beginner, as standard tools offer different scenarios: you can delete one particular dialog, selectively erase important notifications, or complete a sweep of the entire messaging database. In this article, we will take a look at all the methods available, from manual removal through a standard application to the use of advanced tools to deep clean the system.

Before taking any action, it is important to consider the safety of the really important information. Often, old correspondence contains activation codes, addresses or reminders that may be needed in the future, so before permanently destroying the data set, it is recommended to conduct a review of the content and possibly backup critical dialogues to avoid unpleasant situations.

Manual removal of individual dialogues and messages

The easiest and safest way to clean up messages is to manually remove unnecessary dialogs, which is ideal for those who need to get rid of spam or correspondence with a specific sender without affecting other data. Open the standard Messages app on your Xiaomi Mi 8 and carefully study the contact list.

To delete a single conversation, you just need to tap a long tap on the desired dialogue in the shared list. Once the message is highlighted, a context menu will appear at the bottom of the screen or in the top panel. Here you are interested in the basket icon or the Delete button. Clicking on this element will start the process of erasing the selected correspondence from the device's memory.

• 🗑️ Press and hold your finger in the dialogue until it stands out in color.
• 📤 Select the “Delete” button in the action menu that appears.
• ✅ Confirm the operation in the pop-up window if the system requests confirmation.

⚠️ Note: Once the dialog has been confirmed, it will not be possible to restore it with standard system tools.

If you don't want to delete the entire dialogue, but only the specific messages inside it, open the chat with the person you're talking to. Make a long-term click on a specific text message to activate the highlight mode. Now you can click on other messages in the same thread, adding them to the list to delete, which allows you to pinpoint the history, saving important fragments of the conversation.

It is worth noting that deleting messages from the list of inboxes or sent does not free up space instantly if the system uses a shopping cart or temporary storage of remote objects. However, in most standard MIUI configurations for SMS, deleting is final. For mass selection of all dialogs immediately in the selection mode, the “Select All” button is often available in the top menu, which greatly speeds up the process.

Mass cleaning of all SMS via settings

When manually removing dozens of dialogs becomes tedious, built-in mass cleaning tools come to the rescue. Xiaomi smartphones often pre-installed the Security app, which contains utilities to optimize the system. This is where you can find deep trash cleaning features, including old messages. Launch the Security app and find the Cleanup section.

Some versions of MIUI have a separate SMS management tool that allows you to sort messages by type (e.g., advertising only or from unknown numbers only). Go to message settings, usually available through three dots in the corner of the screen or through a gear. Look for the item related to Delete old messages or Message Limit.

To automate the process, you can set a limit on the number of messages per conversation, for example, you can set a limit of 1,000 messages per conversation, and once they exceed that threshold, the system automatically deletes the oldest messages, making room for new ones, and this is an effective strategy to maintain order without constant user intervention.

• ⚙️ Go to the “Settings” of the smartphone and select “Apps».
• 💬 Find in the list of “Messages” and go to “Storage».
• 🧹 Click the “Clear” or “Delete Data” button for a complete reset.

It is important to distinguish between Clear Cache and Delete Data. If you choose Clear Cache, the temporary files of the application will be deleted, but the text messages will remain in place. If your goal is to delete all messages on Xiaomi 8 at a time, you need to choose the option “Delete Data” or “Erase Data”, this action will return the message application to the factory state, destroying the entire SMS database.

⚠️ Note: Using the "Erase Data" function in the application settings will completely delete all correspondence history.

After the cleaning procedure through the settings, it is recommended to restart the device, which will allow the system to correctly recalculate the free space and update the database indexes, you will notice that the memory counter in the Messages section now shows a zero or minimum value, which indicates a successful task.

Use of the “Cleanup” function in the Security application

Shell MIUI It's famous for its maintenance tools, and one of the key ones is the Security app, which scans the device for duplicate files, temporary files and application debris. APK-files, some versions of the interface have a separate module for working with messages marked as spam or promotional mailings.

Run a system scan through the Security app. Once you have completed the analysis, click on the "Clean" button, but don't rush to agree with everything at once. Often the system offers a detailed view of what will be deleted. This list may contain categories related to messages, especially if they are classified by the system as potentially dangerous or advertising.

There's also an Antispam section in the Security app, and when you go into it, you'll see a list of blocked messages, and those messages are no longer on the main list, but they're still in memory, and you can clean up the entire list of blocked messages, which is a great way to remove any spam that has accumulated.

• 🛡️ Open the Security app on the home screen.
• 🚫 Go to the Antispam section at the bottom of the screen.
• 🗑️ Click on the basket icon to remove all blocked SMS.

Xiaomi's built-in tools are preferable to installing third-party software, as system utilities have deeper access to the file system and are more stable. They do not require additional permissions and do not load RAM with background processes. Regular use of this tool helps keep the smartphone clean.

Application of third-party applications for SMS management

If standard methods are not enough or the MIUI interface seems inconvenient for bulk operations, you can turn to the help of specialized software from Google Play. There are many client applications for SMS that offer advanced management functionality, including batch removal, keyword filtering and automatic cleaning on a schedule.

One popular solution is the SMS Organizer app, which not only sorts incoming messages, but also allows you to select groups of messages (like all messages from banks in the last year) and delete them with a single touch, especially for Xiaomi Mi 8 owners who use the device as their main workhorse and receive hundreds of notifications.

When installing a third-party application, the system will ask permission to access your messages, which is a necessary step, because without this right, the program will not be able to perform its functions. Be careful when choosing a developer: give preference to trusted companies with a high reputation to eliminate the risk of personal data leakage.

Using alternative messaging clients can dramatically change the experience of interacting with a smartphone. They often offer more flexible notification and design settings. However, remember that after removing a third-party application, the correspondence history stored in its database can be lost if it was not synced with the cloud.

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Tip: Before installing a new SMS app, make a full backup of messages through the built-in MIUI feature so you don’t lose an important history when switching customers.

Cleaning through a computer with ADB

For advanced users who aren’t afraid of the command line, the most radical and effective method is to use the Android Debug Bridge (ADB) debugging tool, which allows you to interact directly with your smartphone file system and delete message databases, bypassing interface limitations, which is especially useful if your phone freezes when you try to open a crowded SMS partition.

First, activate the developer mode on Xiaomi Mi 8. Go to Settings → About phone and quickly click on the MIUI build number seven times. After that, the "For Developers" menu will appear. Inside it, you need to turn on "Debugging by USB." Connect the phone to your computer with a cable.

On a computer with ADB drivers installed, open the command line. You will need to enter a command to access the device shell. Once connected, enter the adb shell command. Now you are inside the Android system. To delete messages, you need to find and clear the database file, which usually lies along the path /data/data/com.android.mms/databases/mmssms.db. However, direct access to this file without root rights may be limited.

adb shell pm clear com.android.mms

The above command pm clear is analogous to the "Erase Data" button in the settings, but it runs remotely. It completely cleans the message application, including the entire database. SMS and MMS. It's a quick way to get the partition in order. If you have root rights, you can use it. SQL-commands to selectively remove records from the database.

⚠️ Attention: Working with ADB And the command line requires caution, and an incorrect command can lead to the deletion of system files or unstable operation of the device.

The advantage of the method through ADB You can write a script that will regularly connect to the phone and clean old messages, if, for example, Xiaomi Mi 8 is used as a server for receiving. SMS-It's a professional approach to data management.

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Use of the ADB-pm clear commands are the fastest way to completely reset the messaging app without logging into the phone's settings menu.

Recovery of deleted messages and backup

The issue of recovering deleted data is always relevant. Unfortunately, the Android operating system does not have an integrated SMS Recycle Bin, similar to the one for photos in Google Photos. you have confirmed the deletion of a message or cleared the application data, it is marked as free space and overwritten with new data. The chances of recovery depend on the time elapsed since the deletion.

If you regularly back up your phone through your Google account or Mi Cloud service, it will take a few minutes to recover. If you reset your phone or reset to factory settings, the system will prompt you to restore data from. In your Google account settings, check if sync is enabled for SMS. Xiaomi also has its own cloud sync, which can be checked in the Mi Account settings menu.

For users who haven't done backups in advance, there are special PC programs like Dr.Fone or PhoneRescure that scan the device's memory for residual data chunks, and the effectiveness of these programs varies: if it's been a long time since the deletion and the memory has been actively used, recovery is almost impossible.

• ☁️ Check your sync settings in your Google and Mi Cloud account.
• 💾 Use backup apps SMS before cleaning.
• 🔄 Recovery is possible only from a previously created copy.

The best strategy is prevention. Set up automatic message backups once a week. This will take up minimal cloud space, but save you a situation when you need to find old code or important information. For the Xiaomi Mi 8 with its storage capacity, storing backup texts will not be a problem.