Xiaomi: How to keep contacts SIM-map

Modern Xiaomi smartphones running under the control of the shell MIUI HyperOS, or HyperOS, is the default option for storing all data in the Google cloud or Mi Account. This is convenient for syncing between devices, but many users prefer to have a physical backup of numbers directly on the device. SIM-This allows you to quickly transfer the entire phone book when you change devices without having to log in to different accounts or recover data from the cloud.

The process of transfer may seem obscure, as manufacturers often hide this feature in the back of the menu, giving priority to cloud technologies. However, standard system tools make it easy to copy records from internal memory to the operator's chip. In this guide, we will discuss all the nuances of the procedure, possible errors and how to solve them so that you can protect your data from loss.

It is important to understand that SIM-The card has technical limitations on the amount of memory and length of the fields being written, and unlike cloud storage, the chip won’t be able to store long names, photos, email addresses, or multiple numbers for a single contact. Therefore, before the manipulation should be taken into account that some information will be cropped or lost during export.

Preparation for data transfer and compatibility check

Before you start taking action, you need to make sure that your SIM-The card is technically ready to record new information. Older card samples may have a small amount of memory that is already completely occupied by previously stored numbers. If you just insert a new SIM from the operator, it is usually empty and ready to work, but checking the free space will not be superfluous.

Make sure that Xiaomi smartphone correctly recognizes the installed SIM card. the status bar should display the network signal, and in the settings Settings → SIM-If the phone says, "No," the card must be active. SIM-cards" or "wrong SIM-Map, copying procedure will not be possible until the problem with reading the chip is resolved.

⚠️ Note: Before mass copying, we strongly advise you to make a backup of current contacts on the Internet. SIM-card (if there is something there) in the phone book, so as not to lose old important numbers in the process of overwriting.

It’s also worth checking where your contacts are stored right now. If they’re scattered across different sources (a part in Google, a part in your phone’s memory, a part in Viber or Telegram), the copy result may not be complete.

Instructions: copying contacts from phone to SIM

The basic method of data transfer is done through the standard call management application. The interface may vary slightly depending on the version of MIUI, but the logic of actions remains the same for all Redmi, POCO and Xiaomi models. Open the Contacts app and find the management menu.

In the upper right corner of the screen, there's often a three-dot button or a gear that indicates settings, and if you click on it, you'll see a list of actions available, and you'll need to find something that might be called "Import/Export Contacts" or simply "Contact Management," and that's where the tools for external media are hidden.

After selecting the item "Import / export", the system will suggest choosing the direction of the operation. SIM-If you click on this, the phone will request confirmation, because it may take time to do the operation, and warn you of possible format limitations.

If you have hundreds or thousands of numbers on your phone, it can take a few minutes to do this, and don't turn off the screen or launch heavy apps at that moment, so you don't interrupt the recording to the chip, and when you're done, you'll get a successful copy notification or a report on how many contacts you saved.

Working with two SIM-Cards: Selection of the target drive

Xiaomi smartphone owners often use two numbers at the same time, in which case, when trying to export contacts, the system will ask for clarification: which SIM card you need to write data to, and an error in choosing will lead to the fact that the numbers will not be on the card you planned to use for reservation or transfer.

The dialog box will display operator names (e.g, MTS, Beeline, Tele2) ort SIM 1 and SIM 2. carefully match them to the physical location of the cards in the tray of your device. Usually the tray is signed schematically, but it is better to double-check in the Settings menu → The phone. → General settings → SIM-cards, which indicate which slot is which.

Once you select the right slot, you start the copying process. PIN-And the system can ask you to enter it before you start an operation, and that's a standard security procedure that prevents unauthorized access to data on the chip.

Format limitations and data loss during export

Users often face a situation where contacts’ names are cut off or extra numbers are lost after transferring to SIM – not a Xiaomi smartphone mistake, but a severe limitation on the SIM protocol developed decades ago – and the GSM standard did not originally involve storing rich multimedia information.

The maximum length of a contact name on a SIM card is usually limited to 10-14 characters (depending on the encoding); anything longer will be irrevocably cropped; for example, the name “Konstantin Vladimirovich” will turn into “Konstantin B.” In addition, one contact on the SIM card can only write one phone number.

• 📉 Shortened names: Long company names or full names are shortened to the first characters.
• 📞 One number: If the contact had home, work and mobile, only the main (usually mobile) card will remain on the SIM card).
• 📧 Deletion of data: Email addresses, websites, residence addresses and birthdays are not physically transferred.
• 🖼️ Photos and ringtones: Contact images and assigned ringtones always stay in the phone's memory.

⚠️ Attention: Do not use SIM-The only way to store important contacts is to lose critical information that cannot be recovered because of format limitations.

That is why modern experts recommend using a SIM card only for temporary transfer of the base between phones, and for permanent storage rely on Google Account or upload to a.vcf file.

Alternative method: export to VCF file

If your goal is not to transfer another phone to a SIM card, but to create a reliable backup, the SIM method is archaic and inconvenient. It is much more efficient to export to a.vcf (vCard) file, which contains the full information: long names, all numbers, photos and addresses, and weighs only a few kilobytes.

To create such a copy, select Export to file.vcf or Export to storage from the Import/Export menu. The system will create a file that will be saved in the MIUI/backup/contacts folder or in the root of internal memory, which can be sent to your mail, saved to the cloud or transferred to your computer.

The advantage of this method is that when you restore from a.vcf file on a new Xiaomi smartphone (or any other Android), all data will return in full, without cropping names and losing additional numbers, this is the most professional approach to saving a phone book.

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Save the file.vcf not only in the memory of the phone, but also duplicate it to the computer or send it to the messenger yourself to have access to the database even if the smartphone is completely broken.

Error Fixing: Why Contacts Aren't Copyed

Sometimes users are confronted with an error message when attempting to export, the most common reason being a crowded memory. SIM-As mentioned earlier, old cards can hold everything. 50-100 If you're trying to write down numbers. 500 contact, the process will be interrupted after filling the available cells.

In this case, you need to clear the SIM card of old entries. Go to the import/export menu and select "Delete contacts with SIM" or "Import with SIM" (to first save the old numbers to the phone), and then clear the memory of the chip.

Another possible cause is damage to contacts on the chip or a malfunction of the Contacts app, which will help to clean the app cache. Go to Settings → Apps → All Apps → Contacts → Memory → Clear the cache. This will not delete your numbers, but will reset temporary files that may have caused the error.

If the problem persists, try removing the SIM card, erase the contacts with a pin and paste back in. Physical contact can be disrupted by oxidation or dust, which prevents correct data recording.

Frequently Asked Questions (FAQ)

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Use of the SIM-Contact storage cards are a relic of the past, convenient only for a one-time transfer of the base to a button phone or with a complete replacement of a smartphone without access to the Internet.