Changing a SIM card is a routine procedure that many smartphone owners face when moving to a new operator or replacing an outdated chip with a modern Nano-SIM format. However, along with the physical replacement of the media, an important task arises: saving the entire phone book so as not to lose contact with friends and colleagues. In the ecosystem Android this process is implemented as simply as possible and does not require the installation of third-party applications.
Previously, users stored numbers directly on the operator's chip, as this ensured data portability between any devices. Today the situation has changed: modern smartphones offer more reliable storage methods, such as synchronization with Google Account. However, the question of how to transfer contacts from SIM card to SIM card or from phone memory to a new card remains relevant, especially when using push-button phones as backup devices or in the absence of the Internet.
In this article we will analyze in detail all available methods of data migration. You'll learn how to use the system's built-in tools to import and export records, the difference between SIM and cloud storage, and how to avoid common mistakes that lead to information loss. The instructions are suitable for most popular brands, including Samsung, Xiaomi, Huawei and others.
Preparing for data transfer and checking compatibility
Before you begin manipulating the phone book, you need to make sure that your equipment is ready for use. The main problem that users face is the physical mismatch between SIM cards. Old Mini-SIM or Micro-SIM cards may simply not fit into the tray of a modern smartphone that uses the standard Nano-SIM.
If you purchased a new card from an operator, most likely it already has cutouts for all formats. You need to carefully squeeze the desired size chip out of the plastic base. This should be done carefully so as not to damage the gold contacts. If the card is too large, it is better to contact a phone store for a free replacement rather than risk damaging the smartphone slot.
It is also important to check whether the phone recognizes the new SIM card. Insert it into the device and make sure that the network and operator icon appear in the status bar. Only after successful registration on the network can you start working with contacts. Please note that some older phone models have limitations on the number of entries that can be stored on the chip.
⚠️ Attention: Before starting any operations with contacts, it is strongly recommended that you create a backup copy of your current phone book. This will protect you from accidental data loss in the event of a system failure or user error.
☑️ Ready for transfer
Standard method of importing contacts through Android settings
The most reliable and universal method of transferring numbers is using the built-in Contacts or Phone application. The interface may differ slightly depending on the version Android and the manufacturer's shell, but the logic of action remains the same for the entire ecosystem.
First, open your contacts management application. It usually has a green or blue icon with a silhouette of a person. In the application menu (often hidden behind the three dots in the corner of the screen or the "More" button), find the control section. Here you will need the import function.
Click on item Contact management or Settings. In the list that opens, select the option Import/Export contacts. The system will prompt you to select a data source. In our case, the source is SIM card, and the destination is the internal memory of the phone or immediately a new SIM card if it is already installed.
- 📱 Open the "Contacts" application on the main screen.
- ⚙️ Go to the settings menu through three dots or the sidebar.
- 📥 Select "Import from SIM card."
- 💾 Specify the storage location: “Phone” or “Google Account.”
After selecting the source, the system will scan the chip and display a list of found records. You can select all contacts at once or mark only the ones you need. Confirm the action and the copying process will begin automatically. This usually takes a few seconds.
If you have a dual-SIM phone, the system will ask which SIM card you want to read data from. Carefully select the desired slot so as not to import old or unnecessary entries.
Exporting numbers to a new SIM card from the phone's memory
The opposite situation is more common: contacts are already saved in the smartphone's memory or synchronized with the cloud, and you need to write them to a new SIM card. This may be required to transfer the database to a push-button phone or to create a physical backup.
The procedure is performed through the same menu Import/Export contacts, but now the vector of actions is changing. You select “Phone” or “Google” as the source, and SIM card. The system will warn you that the storage format on the SIM card is limited.
Press the button Export to SIM card. If your device has two cards installed, you will be prompted to select a target slot. Confirm your choice. Please note that when exporting, long names may be truncated, and additional fields (addresses, notes) will be lost.
Path to function: Contacts → Menu → Manage contacts → Export to SIM cardImportant to understand format restrictions. The SIM card is not designed to store large amounts of data. It only supports basic information: name and phone number. All other details of the entry will be ignored during transfer.
⚠️ Attention: When exporting to a SIM card, contact names may be trimmed to 10-15 characters due to technical limitations of the data storage format on the chip.
Why are names trimmed?
The standard for storing contacts on SIM cards (GSM 11.11) were developed a long time ago and provide a limited number of bytes for the name field. Modern smartphones use the vCard format, which does not have such restrictions, but when converted to SIM format, the data is truncated.
Features of transfer in shells from different manufacturers
Although the core of the Android system is the same, smartphone manufacturers often modify the interface and names of menu items. This can be confusing for an inexperienced user. Let's look at the differences in popular shells so that you can quickly find the function you need.
In smartphones Samsung with the One UI shell, the path may look like this: open "Contacts", click on the three horizontal lines on the left, select Contact management, then Import/Export contacts. Here the interface is more detailed and allows you to flexibly configure transfer parameters.
Devices Xiaomi, Redmi and Poco with the MIUI or HyperOS shell have a slightly different structure. Go to “Contacts”, click on the three dots at the top, select Import/Export contacts. Often there is a convenient “Copy contacts” function that combines import and export in one step.
Smartphones from Huawei and Honor use the EMUI or MagicOS shell. The logic is similar: Contacts application → four dots (or menu) → Settings → Import/Export contacts. In some versions, this function is moved to a separate application "Optimizer" or "Contacts" from Google, if the user has changed the standard application.
| Brand / Shell | Name applications | Path to import menu | Features |
|---|---|---|---|
| Samsung (One UI) | Contact | Menu → Contact management | Detailed settings, selecting multiple sources |
| Xiaomi (MIUI/HyperOS) | Contact | Menu → Import/Export | Fast copying, integration with Mi Cloud |
| Google Pixel (Stock) | Google Contacts | Customize → Import/Export | Minimalistic interface, emphasis on the cloud |
| Huawei (EMUI/MagicOS) | Contact | Menu → Import/Export | Ability to work through the “Phone” application |
If you cannot find the necessary items in your device, use the search in settings. Enter the word “Contacts” or “Import” in the search bar of your phone parameters, and the system itself will suggest the desired section.
Alternative methods: vCard and Google Synchronization
Direct transfer from SIM card to SIM card is an outdated method. It is much more efficient to use intermediate formats or cloud technologies. This ensures the safety of all data, including photos, email addresses and notes that do not fit on the SIM card.
One of the best ways is to export to a file format vCard (.vcf). You can download all contacts from your old SIM card or phone memory into one file, save it on your internal storage, or send it to your email. Then, on the new device, just open this file, and all entries will automatically be added to the phone book.
The most modern approach is to use Google Account. If you're signed in to your account on both devices, your contacts will sync automatically. You don't need to transfer anything manually. Just make sure that synchronization of the “Contacts” section is enabled in your account settings.
- ☁️ Log in to the same Google account on both devices.
- 🔄 Check the synchronization settings in the "Accounts" section.
- 📂 Export contacts to a .vcf file for local storage.
- 📧 Send the vCard file by email or via instant messenger.
Using the cloud has another advantage: protection against loss. If you lose your phone or break your SIM card, your numbers will remain safe online. You can restore them on any device by simply entering your username and password.
Synchronization with a Google Account is the most reliable way to store contacts, as it eliminates the risk of data loss due to a physical breakdown of the SIM card or phone.
Typical problems and ways to solve them
Despite the simplicity of the procedure, users sometimes encounter with difficulties. The most common problem is that the phone does not see the contacts on the SIM card. This can happen if the card is damaged, the contacts are dirty, or if the recordings were saved in a non-standard format on an old device.
Try gently wiping the gold contacts of the SIM card with a soft cloth. Make sure the card fits snugly in the tray. If the problem is not resolved, insert the card into another phone and check if the numbers are displayed there. If the contacts are visible in another device, the problem may be a software glitch in your smartphone.
Sometimes after importing, contact names are displayed incorrectly, for example, as hieroglyphs or question marks. This indicates an encoding conflict. In this case, only manual input or the use of an intermediate vCard file that correctly processes UTF-8 encoding will help.
⚠️ Attention: If during import the system reports the error “Memory full,” this means that the limit of entries on the SIM card has been exhausted. Delete old unnecessary numbers or use the internal memory of the phone.
There is also a situation where contacts are duplicated. After the transfer, you may find that the same number is recorded twice: once from the SIM card, the other from the phone memory. The Contacts application has a function Merge duplicatesthat allows you to quickly remove duplicates.
How to merge duplicates?
Open the Contacts application, go to the menu and select "Merge duplicates" or "Manage" contacts" → "Merge". The system will automatically find matching numbers and offer to merge them into one entry.
Frequently asked questions (FAQ)
How many contacts can be stored on a SIM card?
Usually a standard SIM card can hold from 100 to 250 entries. The exact number depends on the operator and card type, as well as the length of contact names. If the names are long, the number of available cells is reduced.
Will contact photos be saved when transferred to SIM?
No, the data storage format on the SIM card does not support images. When exporting to a SIM card, the photos will be deleted. To save photos, use synchronization with Google Account or store contacts in the phone's memory.
What to do if, after replacing the SIM card, all the numbers disappeared?
Most likely, the numbers were saved in the memory of the old SIM card that you removed. Insert the old card back, export the contacts to phone memory or Google, then insert the new card and import the data back if necessary.
Can I transfer contacts from iPhone to Android via SIM card?
Yes, it is possible. On your iPhone, go to Settings → Contacts → Import SIM Contacts. After that, insert the card into your Android smartphone and import through the Contacts application. However, it is better to use the “Move to iOS” application or cloud synchronization.
Will information be deleted from the SIM card after importing it to the phone?
No, the standard import procedure creates a copy of the records in the phone's memory, leaving the originals on the SIM card untouched. If you want to free up space on your SIM card, you will need to manually delete contacts after successful copying.