Changing a smartphone or switching to a tariff using physical SIM-The card often challenges the user to carry the phone book. Owners of Xiaomi, Redmi and Poco devices may encounter shell features MIUI Or the new HyperOS, where the contact interface looks different than it does on pure Android, moving records to a SIM is a time-tested method of data migration that ensures that numbers are compatible when switching to any other phone, even a button-based phone.
The copying procedure does not require an internet connection or third-party software installation, as all the necessary tools are built into the Contacts system application. However, it is important to understand the difference between synchronizing with a Google account and local storage on a SIM card chip. The SIM card has a limited amount of memory and often trims long contact names, so this method is best suited for quick migration, not permanent archival storage.
In this article, we will take a look at the algorithm for current firmware versions, look at possible errors, and suggest alternative ways to save your phone book. You will learn how to copy hundreds of numbers in a couple of minutes and what to do if the system says that memory is full. The maximum number of contacts on SIM is usually limited to 250-500 entries depending on the operator and type of card.
Preparation of the device and compatibility check
Before you start manipulating data, you need to make sure that the SIM card is correctly defined by the system. Put the card in the slot and wait for the network to appear. If you have a device with two SIM cards, the system will prompt you to choose the one to be recorded. This is critical, because copying to the wrong slot will lead to confusion, and you will have to start the process again.
It’s also worth checking where your numbers are stored. Modern Xiaomi smartphones use Mi or Google accounts by default. If contacts are scattered across different sources (part on the phone, part on the SIM, part in messengers), the transfer result may not be complete. It’s recommended to combine duplicates in advance through the built-in cleaning function so as not to drag “garbage” to the new card.
- 📱 Make sure the SIM card is active and sees the operator’s network.
- 🔋 Charge the device to at least 30% to avoid resetting when discharged.
- 📂 Check the current location of contacts in the display settings.
- 🔄 Make a backup in case of unforeseen errors when recording.
⚠️ Note: When copying contacts to SIM-Long names can be cut down to the 10-15 symbols, and additional fields (addresses, email) will be lost, since the format of storage on the SIM card chip is extremely primitive.
Don’t ignore the system’s warnings about space shortages. If your SIM card is old or already full, the process may be interrupted in the middle, in which case it’s better to clear old records first or use the.vcf export method, which we’ll discuss below as a more reliable alternative.
Step-by-step: transfer via the Contacts app
The main method of transfer is through the standard application, which is preinstalled on all Xiaomi smartphones. the interface may vary slightly depending on the version of MIUI, but the logic of actions remains the same. Open the Contacts app (green icon with a human silhouette) and go to edit or control mode.
In the upper right corner of the screen, look for the three-dot icon or the gear, which is the settings menu. We're interested in "Import/Export Contacts." When you click on it, you'll see a list of actions available. Select "Export to Contacts" option. SIM-card or copy from phone to phone SIM». The system will automatically prompt you to select contacts for transfer.
☑️ Checklist before transfer
Once you have selected a source (usually a phone or a Google account), the system will request confirmation of the action, confirm the operation, and the copying process will begin. The speed depends on the number of records: 500 contacts are copied in about 10-15 seconds. Do not turn off the screen or launch heavy applications at this point, so as not to interrupt the writing process on the chip.
If you have a two-sim smartphone, watch the selection pop-up carefully. An error in choosing a slot will cause contacts to be recorded on the wrong card you plan to use in the future. After the operation is completed, it is recommended to take out the SIM card and check it on another device.
Use of the Import/Export function in the system settings
Sometimes direct access through the contact app can be hidden or incorrect due to shell errors, in which case the system settings of the Xiaomi smartphone itself come to the rescue, which is a deeper way to manage data at the system level, avoiding possible bugs in the application interface.
Walk along the way: Settings → Annexes → Contacts. In the menu that opens, find the section "Import/Export contacts." Here the functionality is similar, but often more stable, because it accesses directly to the system database. SIM-map».
The system can request permission to access storage or contacts — be sure to agree, otherwise the process will be blocked by Android security policies. Once you select contacts for export, confirm the action. This method is especially useful if the standard Contacts app has been removed or replaced with a third-party counterpart, but system services remain.
- 🛠 Open the system settings of the smartphone.
- 📲 Go to the Application Management section.
- 🔍 Find the “Contacts” list and open their settings.
- 💾 Select the function of data export to external media (SIM).
What to do if the export button is inactive?
It is important to note that in some regions or firmware versions (China ROM vs Global ROM) item names may differ.Look for keywords like "SIM," "Copy," "Move."Using the system menu ensures that you interact with native Android services, which reduces the risk of software conflicts.
Alternative method: export to VCF file
Direct SIM porting is not always the best solution because of format limitations. A more modern and reliable way is to back up.vcf (vCard) format, which contains complete contact information, including photos, addresses and multiple numbers, and is not subject to name cropping.
To create such a file in the Import/Export menu, select Export to Storage or Export to Internal Memory. The system will create a file that can be found in the root folder or directory. /MIUI/contacts_backup. This file can be sent to your mail, saved to the cloud or transferred via Bluetooth to any other device.
The advantage of.vcf is its versatility: You can retrieve contacts from this file on your iPhone, Samsung, Huawei, or even your computer through special reader programs, which is ideal for long-term storage, unlike a SIM card, which is easily damaged by a magnetic field or statics.
| Parameter | SIM-map | VCF file | Google Account |
|---|---|---|---|
| Limit of records | 250-500 pcs. | No restrictions. | No restrictions. |
| Length of name | Cut off. | Complete. | Complete. |
| Supplementary fields | No. | Aye. (email, address) | There are all fields. |
| Risk of loss | High-pitched | Low (at copy) | Minimum |
💡
Store the file.vcf not only in the phone's memory, but also duplicate it to your computer or to the cloud. The memory of the smartphone may fail, and the only data reserve will be lost.
Solving problems and errors when copying
Users often encounter the message “Memory” SIM-This means that the chip has run out of entries, so you have to delete the old, unnecessary numbers right from the SIM card, and you can do this from the same contact menu by selecting the display filter «SIM-map».
Another common problem is that contacts are copied but not displayed. Most likely, the display settings have a Phone Only filter. Go to the contact list settings and select All Contacts or specifically Contacts on the phone. SIM-Also check if the contacts with the # extension are hidden at the beginning of the name (often this is how service numbers are marked).
If the process is hanging in the middle, try restarting your smartphone in safe mode. Third-party apps that have access to contacts (messengers, social networks) can block access to the database. Only system applications work in safe mode, which allows portability.
- ❌ “Not enough memory” error: remove some contacts from the SIM Choose fewer numbers to copy.
- 👁 Contacts not visible: change the display filter in the list settings menu.
- 🔄 The process is frozen: restart the device and close the background applications.
- 📛 Duplicates: After transferring, use the “Combine Duplicates” function in the contact menu.
⚠️ Warning: Do not remove the SIM card during the writing process! this can damage the card file system and it will stop reading at all, requiring formatting.Do not try to copy contacts if a low battery notification appears on the screen. Sudden power outage at the time of writing to the SIM card chip can make it unreadable.
Google Sync: The Best Alternative to SIM
In the era of cloud technology, storing contacts on a plastic card looks archaic. Google accounts provide unlimited space and instant sync. When you log in to your account on a new Xiaomi phone (or any other Android smartphone), all numbers will appear automatically.
To move contacts this way, you don't have to copy anything manually. Just make sure that your Google account settings have your contacts synced. Path: Settings → Accounts and Sync → Google → Sync. Make sure the slider opposite Contact is active.
This method allows you to restore contacts even if the phone is lost or broken, just enter the username and password on any device, and Google automatically combines duplicates and allows you to edit contacts through a convenient web interface on your computer, which is much faster and more convenient than typing on the screen of a smartphone.
Xiaomi also has its own Mi Cloud service available for users, which works on a similar principle but requires a Mi Account.This is convenient if you use the Xiaomi ecosystem (tablets, watches), but for cross-platform Google remains the universal standard.
Frequently Asked Questions (FAQ)
How many contacts can hold the maximum SIM-map?
Will your contact photos disappear when you transfer to SIM?
Can I transfer contacts from iPhone to SIM in Xiaomi?
What if SIM contacts become “krakozyabr”?
💡
The most reliable way to keep contacts is to sync with a cloud account (Google or Mi Cloud) rather than storing them on a physical basis. SIM-a card that is subject to physical wear and has severe data limitations.