Moving to a new smartphone or the need to change a telecom operator often confronts the user with the task of transferring the phone book. Owners of the popular model Xiaomi Redmi 9that runs on the shell MIUImay encounter some interface features that differ from the “pure” Android. Saving records directly to SIM card is a reliable backup method that allows you to quickly restore numbers when replacing a device without being tied to cloud services.
However, it is worth considering that modern standards for storing data on an operator card have technical limitations. Unlike the internal memory of the phone or account Google, SIM card does not support saving additional fields such as email, address or contact photo. However, for a basic phone book, this method remains relevant and in demand among users who value simplicity and independence from the Internet.
In this article we will analyze in detail the algorithm for exporting numbers to Redmi 9, discuss possible pitfalls and offer alternative options for saving data. You will learn how to properly configure the Contacts application to avoid losing information during transfer.
Preparing the device and checking the card capacity
Before you begin the copying procedures, you need to make sure that it is technically possible to write data to your card. Standard SIM cards have a limited amount of memory, which usually varies from 250 to 500 entries depending on the operator and chip generation. If your phone book exceeds this limit, the system will offer to save only part of the contacts or will give an error when trying to export in bulk.
First, open the application Phone or Contact on your Redmi 9. Go to settings to check the current number of saved numbers. If you have two active SIM cards, it is important to decide in advance which of them will be recorded, since the process is performed separately for each card.
⚠️ Attention: Old SIM cards of the Mini-SIM format may have significantly less memory compared to modern Nano-SIMs. If the card has been used for more than 5-7 years, it is recommended to replace it with your telecom operator before transferring a large amount of data.
Also make sure that the card is detected correctly by the system. Go to Settings → About phone → All specs → SIM cards. Make sure the card status is active and the operator name is displayed. If the card is not readable, the procedure for saving to it will not be possible until the hardware problem is resolved.
Before starting the mass transfer, delete duplicate numbers in the internal memory of the phone. This will free up space on the SIM card and prevent confusion after import.
Step-by-step guide for saving contacts on SIM
The shell interface MIUI may differ slightly depending on the firmware version, but the general algorithm of actions for the model Redmi 9 remains the same. The process is carried out through a standard phone book management application. You will need to follow a sequence of steps to select the source and destination media.
Open the application Contact. In the upper right corner of the screen, find the three dots icon or the settings icon (gear). In the drop-down menu, select Import and export contacts. Here the system will offer several options for operations, among which we are interested in moving data from the phone memory to the card.
Select an option Export to SIM card. The system may request confirmation of the action, since this process is irreversible in terms of loss of extended contact information. Next, you will be asked to select contacts to transfer. You can tick individual numbers or use the function "Select all"if the number of entries allows.
☑️ Export algorithm for Redmi 9
After confirmation, the copying process will begin. A progress bar will appear on the screen. Do not interrupt the process or turn off the device screen until it is completed. Upon completion, you will receive a notification that the save was successful or an error message if the space on the card has run out.
Limitations of the data storage format on the SIM card
Users accustomed to the rich capabilities of smartphones should understand the technical limitations of the outdated standard for storing data on the operator's chip. When transferring a contact from internal memory Android to SIM card the information is truncated. Only the name and primary phone number are saved.
All additional fields such as second number, work phone, address, notes and, most importantly, contact photo will be permanently deleted upon export. This is because the SIM card's file system does not support these types of data. Therefore, it is recommended to create a full backup in the cloud before a bulk transfer.
In addition, there is a limit on the length of the contact name. Typically, a SIM card supports up to 10-15 characters in the name field. If the contact name is longer, it will be cut off automatically by the system, which may make it difficult to identify the subscriber in the future.
| Parameter | Internal memory / Google | SIM card |
|---|---|---|
| Number of fields | Unlimited | Name and number only |
| Contact photo | Supported | Not supported |
| Name length | Up to 255 characters | Up to 15 characters |
| Network dependence | Required for synchronization | Not required |
Why are names truncated?
The standard for recording data on a SIM card was developed decades ago, when devices displayed only the Latin or limited Cyrillic alphabet. Modern phones try to adapt long names, but the physical limit of the chip's memory remains unchanged.
Working with duplicates and merging records
A frequent problem when transferring contacts is the appearance of duplicates. This can happen if you have previously saved numbers to the card, and are now adding new ones from the phone book. The interface Redmi 9 provides tools for automatic and manual management of such situations.
After the export is completed, go to the contact settings and select the function Merging duplicates. The system will analyze the list of numbers on the SIM card and offer to combine entries with the same phone numbers, but different names. This is useful if the same contact has been saved under different names.
To manually check, open the contact list, filtering the display only by SIM card. Scroll through the list and visually check for duplicate entries. Removing unnecessary duplicates manually ensures the cleanliness of the phone book and saves precious space on the chip.
- 📱 Use the "Contacts Filter" function to display only numbers from the SIM card.
- 🔍 Check names carefully after importing, as the Cyrillic encoding may differ.
- 🗑️ Delete temporary or test entries before the main export.
If you plan to transfer contacts to another phone, make sure that the receiving device is also correctly configured to display entries from the SIM card. Sometimes a new smartphone by default shows only contacts from your Google account, hiding data from the SIM.
Alternative backup methods
Storing contacts exclusively on SIM card in 2026 is considered an outdated method due to the high risks of data loss if the chip is damaged. The ecosystem Xiaomi i Android offers more reliable and functional ways to save the phone book that do not require physical media.
The most preferable option is synchronization with an account Google. All contacts saved in the phone's memory linked to a Google account are automatically uploaded to the cloud. If lost or replaced Redmi 9 just enter your login and password on the new device to instantly restore the entire book in full.
⚠️ Attention: Settings interfaces and menu item names may change slightly with the release of new versions of MIUI. If you do not find the described item, use the search in your phone settings.
Users Xiaomi can also use the cloud service Mi Cloud. It allows you to create local system backups, including contacts, messages and call settings. The backup file can be saved to internal memory or to an external drive for complete safety.
For advanced users, the function of exporting contacts to a file format is available .vcf. This file can be sent to yourself by email, saved in instant messenger or on a flash drive. The vCard format supports all contact fields, including photos and addresses, and opens on any device.
Solving common export problems
Sometimes users encounter a situation where the export to SIM card button is inactive or the process ends with an error. The most common reason is the lack of free memory on the card. Unlike flash drives, you can clear space on a SIM card only by deleting old entries.
Another problem may be incompatibility of name formats. If you used special characters or emojis in your contact names, they may be replaced with question marks when transferred to your SIM card or cause recording to fail. It is recommended to rename such contacts using only letters and numbers.
If the phone does not see the SIM card for recording, try removing the tray, wiping the card contacts with a soft cloth and inserting it back. Make sure the card is installed the correct way. In rare cases, rebooting the device before starting the export procedure helps.
If exporting to a SIM card constantly fails with an error, the card is most likely damaged or has exhausted its recording resource. In this case, it is safer to use cloud backup.
In case of software failures of the Contacts application, you can try clearing its cache. Go to Settings → Applications → All applications → Contacts → Memory and click the Clear cachebutton. This will not delete your numbers, but may fix errors in the interface.
Frequently asked questions (FAQ)
Is it possible to save a contact photo to a SIM card with Redmi 9?
No, the technical specification of SIM cards does not support storing graphic files. When you export a contact, the photo will be deleted. To save photos, use synchronization with your Google account.
How many maximum contacts can a SIM card in Xiaomi hold?
Usually the capacity is from 250 to 500 entries. The exact number depends on the telecom operator and card type. If you try to save more available space, the system will issue a warning.
What if contact names are displayed in hieroglyphs after transfer?
This is an encoding problem. Try renaming your contacts using only Latin letters or standard Cyrillic without special characters before exporting. Also check the system language settings.
Will the contact be deleted from the phone memory after saving it to the SIM card?
No, the export operation creates a copy of the entry. The original contact will remain in the phone's internal memory or in your Google account unless you manually delete it after transfer.
How to transfer contacts from the SIM card back to the phone?
Go to the menu Import and export contacts and select the option Import from a SIM card. Specify the target folder (for example, Google account or device memory) and confirm the action.