How to save contacts from phone to SIM card Android Xiaomi Redmi

Xiaomi and Redmi smartphone owners often face the need to transfer the phone book to the phone. SIM-This may be required when changing devices when the old machine is being repaired or sold and the new one is not yet configured. Also, the transfer to a physical medium serves as a kind of “insurance” against accidental data loss in case of failures in the work of cloud services or the Android operating system itself.

Modern smartphones offer default numbers to be saved in a Google account, which is really more convenient for syncing between devices. However, if you plan to switch to a button phone or just want to have a physical copy of important numbers regardless of whether you have the Internet, local storage on a SIM card remains relevant. In the MIUI shell, the process has its own features, which we will discuss in detail.

It is worth noting that the capacity SIM-The card is limited by the specifications of the chip, and unlike the internal memory of the phone or the cloud, the SIM is not designed to store media or long records. Therefore, before starting a mass migration of data, it is important to understand the format limitations so as not to encounter cropped names or missing additional numbers.

Technical limitations and format of data storage

Before you start copying, you need to be aware of the physical limitations of the medium. GSM-SIMs have an extremely modest amount of memory, designed primarily to identify the subscriber in the network. When you transfer contacts from a modern smartphone to such a medium, data conversion occurs, which does not always pass without a trace for the recording structure.

The main problem lies in the length of the contact name and the number of numbers associated. If the Xiaomi phone book has five different numbers, two email addresses and a photo added, the SIM card will only retain one primary number and part of the name. Android will warn you that some information will be lost, but many users ignore this message.

⚠️ Note: When exporting to a SIM card, the contact name is often cropped before 10-15 symbols, and all additional numbers (working, fax, second mobile) will be irrevocably removed from the copy on the SIM.

Another important aspect is character encoding: Cyrillic names can only be displayed correctly on devices that support the appropriate encoding. When you install such a SIM card in an old phone or device from another manufacturer, “crackers” may appear instead of letters.

Preparation of the phone book for transfer to MIUI

The preparation process begins with a revision of the current database in the Contacts app. In Xiaomi Redmi smartphones, numbers can be scattered across different sources: some are in the phone’s memory, others are synchronized with Google, others may have remained from a Mi Account or even Exchange account.

Open the standard Contacts app and go to the display settings. Make sure that all devices are running your contacts. If you see duplicates, you better combine them or delete them in advance so that you don't clog up your SIM card memory with double entries. Cleaning up the list before you move will save you time and nerves.

You need to check where each contact is physically stored, and in MIUI, you can do this by opening a particular subscriber card, if it says "Phone" or "Google", the contact is available for management, and if the contact is only in a messenger (for example, Viber or Telegram) and is not tied to the system phone book, you can not copy it to the SIM card by regular means.

Step-by-step: export through the Contacts app

The easiest and most reliable way to migrate data is to use the built-in functionality of the MIUI shell. This method does not require installing third-party software and works consistently on all versions of Android, starting with quite old ones. The algorithm of actions is intuitive, but requires careful choice of source and recipient of data.

Open the Contacts app first. In the upper right corner or in the settings menu (three dots or three bars), look for Import/Export Contacts. When you click on it, you'll see a list of available transactions. SIM-The system will immediately warn that some data may be lost - confirm the action.

Then Android will suggest you select the source. If contacts are scattered, select "All contacts" or the specific account where they lie. After the selection, the scanning and copying process will begin. The screen will display the progress bar. Do not interrupt the process and turn off the phone screen until the operation is complete.

• 📱 Open the Contacts app on the home screen.
• ⚙️ Click on the settings menu and select “Import/Export».
• 💾 Select the option "Export to the SIM-map».
• ✅ Confirm the action and wait for the process to end.

Once completed, you will receive a notification of successful copying. You can now extract the SIM card and check the result on another device. If you plan to transfer the data to a new Xiaomi smartphone, it will be easier to import from a Google account, but for compatibility with older phones, the SIM card method remains uncontested.

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If you have two SIM cards, the system will ask which one to record your contacts with, and choose the one you plan to move to another device, or the one that has more free memory.

Alternative Methods through Management SIM-card

In some versions of MIUI, the path to managing SIM contacts can be hidden in the general settings of the system, which is good because it allows you to manage the memory of the SIM card itself in more detail, looking at the numbers already written there and removing the extra ones.

To access this menu, go to Settings on the main menu of the phone, find the Apps section or System Apps immediately. In the list, find Contacts. Within this menu, there is often a separate tab or button leading to managing contacts on the SIM card, where the interface may look more ascetic, reminiscent of old phones.

In this section, you can see a list of numbers already on the SIM, and if the list is empty, it means the map is clean. To add new entries, you usually have a "Add" or "Cop from your phone" button, and the functionality is limited to the basic operations: copy one contact or all at once, delete, sometimes edit the name.

This method is especially useful if the standard Contacts app is not working properly or crashes when trying to export it, and the SIM card management system menu is lower and less prone to interface software errors.

Use of third-party applications for migration

If Xiaomi’s regular funds don’t work for some reason (for example, the interface is glitching or the SIM card is not read), apps from the Google Play store come to the rescue. There are many utilities specializing in contact management that can have more flexible export settings.

One of the popular solutions is the application “Copy My Data” or specialized managers. SIM-They allow you not only to copy contacts, but also to filter them before writing, for example, you can select only those numbers that contain a certain number of digits, or exclude contacts without names.

When using third-party software, be sure to check the permissions requested. To work with the phone book, the application needs access to contacts and, in some cases, phone rights. Only download programs from trusted, high-rated developers so that you do not share your data with third parties.

Solving problems when copying

Often, users are faced with a situation where the copying process is interrupted or the export button is inactive, most often this is due to overflowing of the SIM card memory. As mentioned earlier, its volume is extremely small. If you try to write 500 contacts there, and the card has 250, the process will stand in the middle.

In this case, you need to “clean up.” Go to the SIM contact management and delete old, unnecessary entries. Also, the format of the number can be a problem. Some older SIM cards do not accept numbers in the international format (via +7 or +38), requiring a local format (8 or 0). Try changing the format of the number in the phone settings before copying.

⚠️ Note: If the phone says "Error" SIM-If you can't save a card, try restarting the device with the SIM card installed, sometimes the chip just freezes and requires you to restart the communication module.

Another rare but possible problem is that the SIM card file system is damaged, so if the card is very old and has been in use for years, the memory cells could wear out, and no contact will be recorded, and the only solution is to replace the SIM card with a number.

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The main cause of copying errors is overflowing memory. SIM-Always check the vacant space before mass export.

Frequently Asked Questions (FAQ)