How to enable data transfer on Xiaomi: mobile Internet, Wi-Fi and file sharing

Data transfer on Xiaomi smartphones is not only access to the Internet via mobile network or Wi-Fi, but also file sharing between devices, synchronization with the cloud, the work of messengers and many applications. However, not all users know exactly where these functions are turned on, especially if we are talking about new models of Redmi, POCO or flagships of the Mi series. In this article, we will analyze all the ways of activating data transfer – from basic mobile Internet settings to hidden options for power users.

It is important to understand that the settings may vary depending on the version of the MIUI shell (12, 13, 14 or HyperOS) and the device model. We will look at the universal methods that work on most devices, and also point out the features for specific lines. If you are faced with a problem of lack of Internet or inability to transfer files, here you will find a solution.

1. Mobile Internet connectivity (3G/4G/5G)

Mobile data is the main way to get online when there is no Wi-Fi nearby, and on Xiaomi you can turn it on in several ways, depending on the firmware version and model.

The fastest method is through the notification panel:

• 📱 Swipe down from the top edge of the screen to open the curtain.
• 🔄 Find the “Mobile Data” icon** (usually marked as 3G/4G/5G or LTE).

If the icon is not in the curtain (for example, on some POCO models with customized firmware), go to the settings:

1. If necessary, select the main one. SIM-Internet card (if you have a dual-SIM card).

⚠️ Note: Some Xiaomi models (e.g. Redmi Note 10 Pro) POCO X3 Pro) settings may be required when mobile data is first enabled APN (If the Internet is not working, contact the operator for parameters or check them in the Settings section. → SIM-map → Access points (APN).

2. Set up data transmission via Wi-Fi

Wi-Fi is a more stable and cost-effective way to connect to the Internet, and Xiaomi has an intuitive way of turning it on, but there are nuances to optimizing speed and security.

Basic steps:

• 📶 Open the notification panel and tap the Wi-Fi icon (if it is gray, the network is disabled).
• 🔍 In the list of available networks, select your own and enter a password.
• 🔒 To protect against connecting to dangerous networks, turn on the option Smart Connection in Wi-Fi settings.

Advanced settings (for experienced users):

1. Go to Settings → Wi-Fi → More
2. Activate Wi-Fi modem if you want to distribute Internet from your phone.
3. Enable Wi-Fi Direct to transfer files directly between devices without a router.
4. Adjust the frequency range (2.4 GHz or 5 GHz) depending on speed and range.

On models with HyperOS (for example, Xiaomi 14 or Redmi K70) in the Wi-Fi settings, a new Wi-Fi 6/6E section has appeared, which allows you to manually select the connection standard for maximum speed.

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If Wi-Fi is permanently off, try turning off the battery saving function for Wi-Fi in additional settings.

3. File Transfer: Bluetooth, Mi Share and NFC

Sharing data between devices is one of the most sought-after features. Xiaomi offers several ways to transfer files, each of which is suitable for different scenarios.

3.1. Bluetooth

Universal method for transferring small files (photos, contacts, music):

• 🔵 Turn Bluetooth on in the notification panel or through Settings → Connections → Bluetooth.
• 📱 Find the recipient device in the list and connect to it (code confirmation may be required).
• 📎 Select a file in the gallery or file manager, click Share → Bluetooth.

3.2 Mi Share (formerly Mi Drop)

Xiaomi’s proprietary technology for high-speed file transfer without the Internet:

1. Open the Settings → Connections → Mi Share.
2. Enable the feature and select visibility (for all or contacts only).
3. On another Xiaomi device, also activate Mi Share and select the file to submit.

3.3. NFC

For quick transfer of contacts, links or small files:

• 📱 Make sure that NFC included in Settings → Connections → NFC.
• 🔄 Bring the devices back to each other (antenna) NFC usually located at the top).
• 📎 Select a file and confirm the transfer.

⚠️ Attention: On models POCO (for example, POCO F5) Mi Share can be disabled by default. To activate it, go to Settings → The phone. → Version. MIUI and tap 7 times on the kernel version string, then go back to the connection settings.

4. Modem: Internet distribution with Xiaomi

If you want to share your mobile internet with another device (laptop, tablet), Xiaomi offers three options:

• 📶 Wi-Fi Access Point – Distribution over a wireless network.
• 🔌 USB-modem - connection via cable.
• 🔵 Bluetooth modem – to save charge.

Instructions for Wi-Fi access point:

1. Go to Settings. → SIM-maps and mobile networks → Access Point and modem.
2. Select the Wi-Fi Access Point and turn it on.
3. Set up a network name (SSID) and password (WPA2-PSK is recommended).
4. Connect another device to the network you have created.

For USB-modem:

• Connect your phone to your computer via cable.
• In the modem settings, select USB-modem.
• A new connection will appear on the PC in Network Connections.

5. Hidden data transmission settings (for experienced)

MIUI and HyperOS have hidden options that allow you to fine-tune your data transfer, which are useful if standard methods don’t work or you need optimization.

Engineering menu (for network diagnostics):

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After entering this code, a menu will open where you can:

• 📊 View statistics on the use of mobile data.
• 🔄 Forced to switch network type (e.g., with LTE on UMTS).
• 📡 Check the strength of the signal and select the preferred network.

Manual settings for APN:

If the mobile internet isn't working, the APN settings may have gone wrong.

1. Go to Settings. → SIM-map → Access points (APN).
2. Click on the three dots in the top right corner and select Reset to standard.
3. If that doesn’t work, add a new APN with your carrier’s options (you can find them on the official website).

Developer mode to limit the background:

To prevent apps from using mobile data in the background:

• Activate Developer Mode (7 taps by Assembly Number in Settings → About Phone).
• Back to Settings → Additionally. → For developers.
• Find the option to limit background data and turn it on.

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Using the engineering menu can cause network failures. Don't change the settings if you're not sure what they're supposed to do!

Frequent problems and their solutions

Even after setting up the data transfer correctly, Xiaomi users sometimes encounter errors, and let’s look at the most common ones and how to fix them.

⚠️ Note: Some Xiaomi models (e.g. Redmi) 9A or POCO M3) post-update MIUI 14 may disappear the icon of mobile data in the curtain, in which case, turn it on through the settings or add a shortcut to the home screen through the widget Switches.

7. Optimizing data transmission to save traffic

Mobile internet on Xiaomi can be customized to be more economical, especially for users with limited rates.

The main ways of saving:

• 📉 Include Traffic Savings in Settings → SIM-map → Transfer of data.
• 🚫 Limit background data usage for individual applications (in each application settings).
• 🔄 Set up an automatic Wi-Fi connection in Settings → Wi-Fi → Additionally. → Auto-connection.
• 📊 Use built-in traffic monitoring (Settings) → SIM-map → Use of data) for tracking the flow.

For advanced users:

• Install the NetGuard app (without root) to block internet access for individual applications.
• Use a VPN with traffic compression (such as Opera VPN).
• Turn off autoload media in instant messengers (Settings → Data and memory → Media Autoboot).

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If you travel frequently, turn on data roaming only when necessary. → SIM-map → Roaming can set a traffic limit for roaming.

FAQ: Answers to popular questions