Changing a smartphone or having to synchronize data between two devices of the same brand is often a challenge for users of the Xiaomi ecosystem. Device owners often wonder how to transfer a phone book as quickly as possible and without the use of third-party cloud services. One of the classic and reliable methods built into the MIUI and HyperOS system is the use of Bluetooth wireless protocol, which does not require an Internet connection and allows you to exchange data directly between devices.
The process of transferring contact data looks simple, but it has its own technical nuances that must be considered to successfully complete the operation. Unlike cloud synchronization via Mi Account, Bluetooth requires physical proximity devices and manual confirmation of actions at each stage. This ensures a high level of security, since the data does not leave the limits of your gadgets and is not transmitted through third-party servers.
In this article, we will discuss in detail the algorithm of actions that will allow you to correctly transfer contacts from one Xiaomi smartphone to another. We will consider the preparation of devices, the pairing process, the procedure for export and import, and also pay attention to possible errors that can be encountered in the process. Understanding these mechanisms will help you avoid losing important information and save time when setting up a new device.
Preparation of devices for data transmission
Before starting the procedure, make sure that both smartphones are ready to interact. The first step is to check the battery charge on both devices, since active communication modules can quickly consume energy. It is recommended that the charge level is at least 30-40% on each of the devices, so that the process is not interrupted halfway due to a sudden shutdown.
Then activate the wireless module itself. To do this, lower the swipe notification curtain from top to bottom and find the Bluetooth icon. If it is not active, click on it to illuminate. Also make sure that the screens of both smartphones are unlocked, since the Android security system can block pairing requests on the locked device.
⚠️ Warning: Make sure that none of the devices are in “Invisible” or “Hidden” mode, otherwise the second smartphone simply will not be able to detect the first in the list of available gadgets for connection.
An important aspect is to check the list of previously paired devices, if your smartphones have been connected before, the process will go faster, but if you are using the devices for the first time or after resetting, you will need to go through a full search and confirmation of pairing, which will take a little longer, but ensures a clean connection.
The process of pairing Xiaomi smartphones
The basis for successful data transfer is correct pairing. On the device from which the contacts will be transmitted (source), you need to go to the Bluetooth settings menu. Usually the path looks like Settings → Bluetooth or through a long press on the icon in the notification curtain, you should click the "Device Search" button or wait for an automatic scan of the environment.
The receiving device (target smartphone) should also have visibility on. When your second Xiaomi phone's name appears on the source screen, click on it. Both screens will pop up a pairing confirmation window, where the same numerical codes will be displayed, you need to check the codes and click "Plug" or "OK" on both devices.
☑️ Checklist for preparation for pairing
Once the connection is successful, the status on the menu will change to Connected, and smartphones now know each other and can share not only contacts but other media files, and it is worth noting that the phone book is often transmitted via the standard protocol using an OBEX profile, which is built into the system and does not require the installation of additional software.
Export of contacts on source device
Once you have established the connection, you can start the transmission procedure itself. Open the standard Contacts app on your smartphone, from which you will copy the data. In the upper right corner of the screen, there is usually a menu marked with three dots or horizontal bars. Click on this control to call an additional menu.
In the list that opens, select “Import/Export Contacts” or simply “Export” and the system will suggest you choose a save format. For Bluetooth, the most suitable and versatile format is vCard (files with the extension.vcf). This format supports saving not only names and numbers, but also additional fields such as addresses, email and photos, if they are attached to the contact.
Next, the system will suggest you choose the mode of transfer. In the list of available options, find and select "Bluetooth". The phone will automatically start searching for previously paired devices. The list should show your second Xiaomi smartphone. Click on its name to initiate the file submission.
⚠️ Note: Exporting a large number of contacts (more than one) 500-1000 The system can create multiple files or warn about long transfer times, as Bluetooth speeds are limited compared to Wi-Fi.
If you don't see Bluetooth options in the export menu, make sure that the default file transfer protocol is chosen in the phone's settings, or try to select Share in the context menu of a particular contact if there are few.
Importing data on the receiving device
The moment you send a file from the first phone, the second Xiaomi device will display a system notification of the incoming file via Bluetooth. You must click "Accept" or "OK" to start the download process. The file will be saved to the download folder or the import wizard will immediately start, depending on the version of the MIUI shell.
Once you receive the file, the system automatically prompts you to open it. When you start a.vcf file, you'll open a contact import window. You'll be asked to choose a place to save it: you can save it to your phone's memory, to your phone. SIM-For maximum safety and the possibility of subsequent synchronization, it is recommended to choose a Google account or device memory.
Confirm the action by clicking the "Import" or "OK" button, and you start reading the file and adding the entries to the phone book, and when you complete the operation, you'll see a successful import notification with the number of contacts you've added, and your entire phone book is now available on the new device.
What if the importation does not start automatically?
Solving synchronization problems and errors
Despite the simplicity of the method, users may encounter technical difficulties, such as the “File is not supported” error or the lack of response when trying to send a contact, which may be due to the fact that the receiving device is full of memory or no vCard file processing application, although Xiaomi has built-in it by default.
Another common situation is a connection interruption during transmission, which often occurs if the devices are more than 5-7 meters apart or there are metal barriers between them, and the signal may be interrupted due to other wireless modules, such as Wi-Fi or a microwave oven, which creates interference in the 2.4 GHz range.
| Problem. | Possible cause | Decision-making |
|---|---|---|
| No device found. | Visibility down. | Enable visibility in Bluetooth settings |
| Mistake in sending | The file is too big. | Break up contacts into groups and send parts |
| Contacts with encoding | Incompatibility of encoding | Select vCard 3.0 format for export |
| Duplicate records | Contacts were already on the device. | Use the function of combining duplicates after import |
If the transmission is constantly disrupted, try to turn off Wi-Fi on both devices during the transfer to reduce the load on the antenna module and eliminate software conflicts of connection priorities, and rebooting the Bluetooth module (turn off and on again) on both smartphones will also help.
Alternative methods and comparison of effectiveness
While the issue was Bluetooth, it’s worth mentioning that there are more efficient tools for one brand of devices: Xiaomi’s smartphones pre-installed the Mi Mover app, which uses Wi-Fi Direct to transmit data, and the speed of transmission through this channel is ten times faster than through Bluetooth, which is critical when transferring thousands of contacts along with photos and videos.
Bluetooth remains relevant in situations where you need to quickly throw one or more contacts, or when the device is not configured Mi Account and no access to Wi-Fi network. This is a universal “emergency” method that works on any Android smartphone without installing additional software.
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To transfer a huge phone book (2000+ contacts), it is better to use sync through Google Account – it will take a couple of seconds and will not require you to constantly keep your phones close.
When choosing a method, you should evaluate the amount of data. For a dozen numbers, Bluetooth is ideal for its simplicity. For a complete migration to a new phone, it is wise to use specialized utilities from the manufacturer that preserve the data structure and associated media files without encoding errors.
Data security in wireless transmission
Using Bluetooth to transfer contacts is considered safe, as the connection is established directly between two devices (Point-to-Point) Data does not pass through Internet servers, which minimizes the risk of interception by third parties from the outside, unlike transmission through unsecured messengers or public cloud storage.
However, be careful when pairing in public places. Always check the name of the device you're pairing with and check the confirmation codes. Attackers can exploit protocol vulnerabilities to gain unauthorized access, although these holes are quickly closed in modern versions of Android and MIUI.
⚠️ Warning: Once the contact transfer is complete, be sure to turn off Bluetooth or make the device invisible to others to prevent attempts at unsancony connection in crowded places.
Regular backup of contacts to SIM-A card or export to a.vcf file to a computer is also a good security practice, which will allow data recovery even in the event of a phone loss or software failure that may affect the device's internal memory.
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Bluetooth is a reliable way to quickly transfer small amounts of data without the Internet, but for a full migration of the phone, it is better to use Wi-Fi Direct or cloud services.