Changing a mobile device or a sudden operating system failure often challenges users to quickly restore access to important phone numbers. Owners of Xiaomi smartphones with a MIUI shell or the new HyperOS have some handy tools for managing a phone book, but the classic method of copying to a plastic card remains relevant, and this is especially useful when switching to a button phone or using a device without being tied to cloud services.
The data migration process does not require root rights or complex software, since all the necessary functions are built into the standard Contacts app. SIM-This map will avoid loss of information and ensure compatibility of numbers when changing carriers. In this article, we will discuss in detail the algorithm of actions, consider possible format limitations and answer frequently asked questions.
Preparation for transfer and compatibility check
Before you start directly copying records, you need to make sure that your SIM-The standard Nano-SIM and Micro-SIM cards have a limited amount of internal memory, which is often filled with operator service data. If the card has been used before, it may have old records that may conflict with new ones or take up precious space.
Modern Xiaomi smartphones save contacts to a Google account or Mi Cloud by default, which allows them to sync between devices. However, the format of data storage in the cloud is much richer: it supports long names, multiple numbers, email addresses, photos and posts. Standard SIM-The card is limited to 17 characters for the name and one number per record, so when transferring some information will be irretrievably lost or cropped.
It is recommended to pre-clean the card from unnecessary entries through the control menu, if this is provided by your current device or operator, it is also worth checking whether the card in the slot is correctly defined, especially if the smartphone supports the installation of two SIM cards at the same time. Incorrect choice of source and recipient can lead to duplication of records or writing them in the wrong place.
Step-by-step instructions for copying contacts
To start the process, you need to open the standard Contacts app, which is system-based and is present on any Xiaomi device. In the application interface, you should find the settings menu, which is most often hidden under the three-dot or three-bar button in the upper or lower right corner of the screen, and this is where the data import and export tools are located.
After entering the control menu, select "Import/Export contacts" and the system will prompt you to select the direction of operation. SIM-map or "copy in" SIM-If you have two SIM cards, the phone will ask you to specify which one (SIM 1 SIM (2) the data will be retained.
☑️ Checklist before copying
Then you'll see a list of contacts stored in your phone's memory, and you can select individual numbers manually, or you can use the "Select All" feature, which is usually at the top of the list. Once you confirm your choice, the system will alert you to the possible loss of some data due to format constraints and request final confirmation of the operation. The copying process takes from a few seconds to a couple of minutes depending on the number of records.
Format limitations and data loss
Users often wonder why they are moving to SIM-The contact names appear to be cropped or partially disappear due to technical limitations of the standard. GSM, It was not designed to store complex structured data, but the SIMKI phone book protocol is designed to store only complex structured data. ASCII-symbols and a limited set of characters.
When exporting from the Xiaomi smartphone, automatic data conversion occurs, during which:
- 📉 Names are longer 15-17 The characters will be cropped to a permissible limit, which may make some records unrecognizable.
- 📉 Additional numbers added to a single contact (mobile, work, home) will be stored as separate, independent records.
- 📉 All additional information such as email addresses, social media links, photos and birthdays will be completely deleted.
⚠️ Note: When importing back contacts with SIM-cards for a new smartphone, all cropped names will remain short, and divided numbers will not automatically be combined into one contact card.
In addition, there may be problems with encoding characters if the contact names used rare characters or emojis, at best they will be replaced by question marks, at worst - the record may become unreadable. SIM-The card is only a temporary medium when changing the device, and not as the main storehouse of important information.
Managing and editing SIM records
Once the data has been successfully transferred, it may need to be checked or edited directly from the card. On Xiaomi smartphones, this can be done through the same Import/Export menu by selecting the option “Manage SIM contacts.”
The management interface allows you to perform basic operations:
- ✏️ Editing the contact name (within the character limit).
- ✏️ Change the phone number if an error was made when entering.
- ✏️ Deletion of individual records to vacate a place.
It is worth noting that the speed of work with contacts stored directly on the SIM-The card may be lower than the phone's cloud or local databases, which is due to the lower read/write speed of the card chip compared to the smartphone's flash memory. For daily use, it is recommended to copy the recordings back to your phone or Google account after transferring to a new device.
Why are some contacts not copied?
Solving Errors in Exports
During the data transfer process, users may encounter various system error messages. One of the most common problems is the message "Memory" SIM-Even if you just bought a new card, some of its capacity can be reserved by the operator or occupied by hidden service records.
To solve this problem, you need to enter the contact management mode SIM And you can delete all the extra or blank records, sometimes by formatting the card through the phone menu if you have the option, or by cleaning it through the reader. SIM-Another common error is "failed to copy the contact," which often occurs when you try to write down a name that contains prohibited characters.
The table below shows the main types of errors and how to fix them:
| Type of error | Probable cause | Decision-making |
|---|---|---|
| Memory's full. | Record limit reached (usually 250-500) | Delete old records or break exports into pieces |
| The inadmissible symbol | The name contains emoji or special symbols | Rename the contact, leaving only letters and numbers |
| SIM reading error | Poor contact or chip damage | Translate the map, wipe contacts, check in another slot |
| Copying failure | Unstable power supply or software failure | Reboot the smartphone and repeat the operation |
Alternative backup methods
Given all the limitations of the work with SIM-Xiaomi owners are much more efficient at using modern backup methods. The built-in Mi Mover app allows you to quickly and losslessly transfer the entire phone book, including photos and additional fields, to another smartphone. This method does not require the Internet and works by creating a local Wi-Fi network.
The most reliable way is to sync with your Google account, and just make sure that your account settings are enabled to sync contacts, in which case, when you install a SIM card in a new phone and log in to your Google account, all the numbers will automatically appear in the phone book in seconds.
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Use the Google Contacts app instead of the standard MIUI call for easier duplicate management and recovery of deleted numbers via the web interface.
You can also create a local backup in.vcf. The vCard file contains all the contact information and can be stored in your phone’s memory or sent to your email. To create such a copy in the Import/Export menu, select Export to Storage.
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Using Google or Mi Cloud cloud sync ensures the safety of data even in the event of physical loss or breakdown. SIM-maps and smartphones.