Owners of budget smartphones such as Redmi 9A, Often faced with a situation where you need to clear your memory SIM-The problem is that the standard shell interface is the same as the old records. MIUI This often hides the direct function of mass deletion of numbers directly from the operator’s chip, and this is not accidental, since modern storage standards recommend using cloud services or internal device memory.
However, the need to manage SIM card entries cannot be ignored, especially when changing operators or synchronization errors occur. Contact deletion may be necessary if you notice duplication of numbers or if the limit of entries on the card is exhausted and new names simply do not remain. In this article, we will discuss in detail all available methods for solving this problem, from regular tools to the use of hidden engineering menus.
It is worth noting that the process of cleaning data on Xiaomi Redmi 9A has its own nuances that distinguish it from other Android smartphones. the interface may vary depending on the firmware version, but the basic principles of working with the phone book remain unchanged. You will need to follow the steps carefully so that you do not accidentally lose important numbers that were not saved in your Google account.
Preparation for cleaning and backup of data
Before proceeding with radical measures and erasure of information, it is critically important to create a backup copy. SIM-The card is an outdated medium with limited memory and low read speed, so storing numbers on it carries the risk of losing them if the chip is damaged. If you plan to delete the records, make sure they are already synced with your Google account or stored in your phone’s internal storage.
The copy check process takes only a couple of minutes, but saves you from hours of searching for lost numbers. Open the Contacts app, go to the settings and select Import/Export. Here you will see sync status and be able to force all data to the cloud, especially for users who have previously actively used imports from other devices.
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Use the Contacts Merger feature in the Redmi 9A phonebook settings before deleting it – this will automatically find duplicates and merge them, saving all numbers and email addresses in one card.
Once you've made sure that the data is secure, you can move on to the technical aspects. Please note that some carriers block the recording of subscriber names on their cards, leaving only phone numbers, in which case deletion can only be done along with the number, so rechecking the list before cleaning is mandatory.
Standard method of removal through the Contacts app
The most obvious and secure way to manage records is built directly into the MIUI system application. To start, open the standard Caller or the separate Contacts app. In the upper right corner of the screen is a three-dot icon or gear that opens the context menu, and that's where the basic management tools are hidden.
In the menu that opens, you need to find the option "Display settings" or "Contact filter." Make sure that you choose to display all contacts, including those on the menu. SIM-Often, by default, the phone only shows records from the device and Google account memory, hiding the SIM card data from the user's eyes.
- 📱 Open the Contacts app and click on the menu icon in the corner of the screen.
- 👁️ Select “Display Contacts” and tick the box opposite yours. SIM-map.
- 🗑️ Return to the general list, click “More” (three dots) and select “Tag All” or select the numbers you need manually.
- ✅ Click the “Delete” button and confirm the operation in the pop-up window.
After doing this, the selected entries will be erased. However, the Redmi 9A interface may not show a clear separation between the phone's memory and the SIM card in the common list. If after deleting the numbers continue to appear when re-imported, then they are physically left on the chip, and a deeper approach through the import/export menu is required.
Use the Import/Export menu for complete cleaning
The most effective method is to ensure that contacts with SIM-maps on Xiaomi Redmi 9A, This tool is designed to migrate data between different storages and allows you to see the structure of records in more detail» → menu) → «Settings» → «Import/Export of contacts».
You are interested in the option “Export to the SIM-card or “import with” SIM-And paradoxically, cleaning sometimes requires intermediate steps. If you choose "Import with" SIM-card, the phone will copy all the numbers to internal memory, then selecting the option to delete or simply clearing the list on the SIM card (if such a feature is available in your version of the software through the menu "Management" SIM»), you'll make room.
⚠️ Note: Delete all contacts with SIM-Maps" may not be available in some regional firmware versions MIUI. If you don’t see this button, use the method of copying all the data to your phone, and then resetting the SIM card settings through an engineering menu or replacing the card.
It's important to understand the difference between storage sources. When you remove a contact from a shared list, the system may ask where to remove it from: from a Google account, phone memory or SIM. Read pop-up notifications carefully so you don't clear the cloud archive instead of a local copy. On budget models like 9A, dialog boxes can be less informative than on flagship lines.
☑️ Checklist before removal with SIM
Working with CIT's Hidden Engineering Menu
For advanced users who have not found standard cleaning methods, there is access to the CIT (Customer Interactive Test) engineering menu, a diagnostic tool built into Xiaomi’s firmware that allows you to test device components, including the communication module, accessed through a special code in the call application.
Type in dialer code ##6484##. If the code works, the test menu will open «SIM Card" or "Telephony." Some software versions have a feature available here «SIM Toolkit" or service number management where you can execute a cleaning command (EF-files) directly at the chip level.
The sequence of actions in CIT:
1 Enter the code ##6484##
2. Find the "SIM Card Test" section
3. Select the "SIM Toolkit" option (if available)
4. Find the command "Delete All" or similarIt is worth noting that on global versions of firmware access to deep file editing SIM through CIT If the menu does not open or the desired items are missing, do not try to install third-party applications to access the service. CIT — It could disrupt the radio, so the only reliable option is a physical replacement. SIM-card-card.
What to do if the CIT code does not work?
Comparison of Storage Methods: SIM, Phone and Cloud
Understanding the differences between storage types will help avoid confusion in the future. SIM-The card has a very limited amount of memory (usually up to 250 contacts) and supports only basic text names without additional fields.
Below is a table that shows the key differences and limitations of each data storage method on Redmi 9A.
| Parameter | SIM-map | Phone memory | Google Account |
|---|---|---|---|
| Memory capacity | Limited (up to 250 entries) | Depends on free memory. | Almost unlimited. |
| Photo preservation | Not supported | Supported | Supported |
| Access from another device | Only when the card is moved. | Only on this phone. | Instant synchronization |
| Risk of data loss | High (if card breaks) | Medium (when the phone breaks) | Minimum |
Based on the table, it becomes obvious that storing numbers on a SIM card in 2026-2026 is an archaic method. Xiaomi Redmi 9A, with modern hardware, is completely focused on cloud technology. Transferring all data to Google Contacts will not only free up space on the SIM card, but also protect your address boek from loss when changing your smartphone.
Solution: Duplicates and synchronization errors
A common problem after contact manipulation is the appearance of duplicates, which occurs when the same number is stored on SIM, in phone memory, and in the cloud. MIUI can display them as separate records or combine them incorrectly.
Go to Contact» → menu → «Contact management. Select "Combine repetitives." The system will analyze the database and suggest that similar records be merged. Once combined, you can safely delete the originals from the database. SIM-cards without fear of losing data, as the combined record will remain in the phone's memory.
- 🔄 Open your contact settings and find the Cleanup section».
- 🔍 Run a scan for duplicates.
- 🧹 Confirm the unification of all found pairs.
- 🗑️ After the merger, delete the original entries from the SIM card through the import / export menu.
⚠️ Note: When connecting contacts, the system may leave a record with the least amount of information. Always check the result of the merger: if an address or email is missing, edit the card manually before final saving.
If after all the manipulations, the contacts continue to “resurrect” after deleting, check the synchronization settings. SIM-Disable this option in the Contacts settings to prevent deleted numbers from automatically being copied back to the device memory.
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The most reliable way to get rid of contacts SIM-Forever, you can copy them to your Google account and then physically replace them. SIM-the card of the operator, since the software deletion is not always guaranteed to clear the service sectors of the memory of the chip.