How to enable data transfer on Xiaomi phone: all ways

Data transfer on Xiaomi smartphones is the basis of messengers, social networks and most applications. Without a properly configured Internet connection, even the most advanced Redmi or POCO turns into a brick with a beautiful screen. But what if mobile Internet suddenly disappeared and Wi-Fi is not connected? Or how to save traffic without abandoning online services?

In this article, we’ll look at all the ways Xiaomi devices enable data, from basic MIUI settings to hidden features for power users, how to activate 4G/5G, set up automatic network connectivity, fix typical “No Service” or “Authentication Error” errors, and how to limit the background traffic of greedy apps, and why a simple reboot of the communication module sometimes helps.

The instructions are suitable for all current models, from the budget Redmi Note 12 to the flagship Xiaomi 14 Ultra. Even if you have an old version of MIUI 12 or a fresh HyperOS, the data switching algorithms remain similar. Let's start with the simplest.

1. Basic ways to include mobile data

The most obvious method is to use the Quick Settings Panel. Swipe down from the top of the screen to open the notification curtain. Here you will see the Mobile Data icon (usually stylized as a wave antenna) and tap it once, so if the icon lights up, the data transmission is activated.

If the icon is not in the first line, expand the panel completely (swipe down again) and find it there. On some MIUI firmware, you may need to hold the icon for 1-2 seconds to open the extended menu of the mobile network, here you can immediately select the network type (4G, 5G or Only 3G) and turn on roaming if necessary.

• 📶 Fast turn on: one tap on the icon in the curtain is the fastest way, works even on a locked screen (if not configured). PIN-code SIM).
• 🔄 Reboot module: if the Internet does not appear after turning on, try to turn off and turn on mobile data again (double tap with a pause of 5 seconds).
• 🌐 Network priority: in the extended menu you can manually select 4G Instead of automatic mode if the connection is unstable.

If the mobile data icon is not in the curtain at all, this can mean:

• 🚫 SIM-Card not recognized (check the tray).
• 🔧 System icons disabled (configure in Settings) → Notification panel).
• 📱 Installed custom firmware without support for mobile network.

2. enable data transmission via MIUI settings

If the Quick Settings Panel is not available (for example, due to an interface failure), use the Settings menu. Open the Settings app (cog icon) and go to the section SIM-maps and mobile networks. Here you'll see all the installed SIM-cards with the possibility of individual adjustment.

For each SIM, options are available:

• 📱 Mobile data: master switch (similar to icon in curtain).
• 🌍 Data roaming: turn on if you are abroad (caution - charging may vary!).
• 🔗 Network type: select 4G (recommended), 5G (if supported) or only 3G charge-saving.
• 📡 Access points (APN): manually configure if the automatic settings do not work (relevant for MTS, Beeline, Tele2).

Note the "Use Mobile Data" item called each SIM. Here you can set a priority card for data transfer if you have Dual-SIM. For example, on the POCO X5 Pro with two slots, you can choose which SIM will be used for the default Internet.

Select the right type of network (4G/5G)|

Roaming enabled (if necessary) |

Set to tune in. APN (for certain operators)|

SIM-The card is recognized by the system (no icon "!") next to the number)-->

An important nuance: on some firmware MIUI (Especially on older versions of Redmi. 4X or Mi A1) point SIM-Mobile and mobile networks can be called dual networks. SIM If you can't find a section, search by settings (the magnifying glass icon at the top of the screen).

3. Set up APN access points for stable internet

If mobile data is turned on but the internet is not working, the problem may lie in incorrect settings. APN (Access Point Name: This is the kind of "address" that connects the phone to the operator's network. APN They are set up automatically, but sometimes manual adjustment is required – especially after a change. SIM-card-drop.

To set up APN on Xiaomi:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are several).
3. Slip on the Access Point (APN).
4. In the upper right corner, click on three dots and select a New Access Point.
5. Fill in the fields according to your operator’s parameters (see the table below).
6. Save the settings and restart the phone.

The critical detail is that after you save a new APN, you need to select it from the active list (check next to the name). Sometimes the system creates duplicate profiles - delete the old ones to avoid conflicts.

⚠️ Note: if after manual adjustment APN The Internet never worked, check if your tariff blocks it. Some operators (for example, Tele2 on My Talk rates) require the Internet option to be connected - check this in your personal account or on 611.

4. Wi-Fi Data Transfer: Setup and Problem Solutions

Mobile data isn't the only way to get online, Wi-Fi is often faster and cheaper (especially at home or in the office) to connect to a wireless network on Xiaomi:

1. Open the Settings. → Wi-Fi.
2. Activate the Wi-Fi switch at the top of the screen.
3. Select the desired network from the list.
4. Enter the password (if required) and click Connect.

If the network is not displayed or the connection is constantly reset, try:

• 🔄 Forget the network: tap the Wi-Fi name, select Delete (or Forget), then connect again.
• 📶 Change the range: in the settings of the router, turn on the mode 802.11n (5 GHz instead 802.11b/g (2.4 GHz) if your Xiaomi supports dual-band Wi-Fi.
• 🔒 Check it out. MAC-Filtering: Some routers block devices by MAC-Find the address. MAC Your phone in the settings → The phone. → General information.

On MIUI 14 and later, Wi-Fi Assistant (in Wi-Fi settings) automatically connects your phone to open networks with proven security (such as in cafes or airports), and to avoid unauthorized connections, turn off this option if you do not use it.

💡

If the phone doesn’t connect to 5GHz Wi-Fi, check the region in your router settings. Some Xiaomi models (such as the Redmi Note 10 Pro) don’t support 149–165 channels in Russia due to regulatory restrictions.

5. Modem mode and Internet distribution

Your Xiaomi can not only consume traffic, but also distribute it to other devices, a feature called “Modem Modem” (or Access Point) and is useful when you need to connect a laptop, tablet or second phone to the Internet.

To enable distribution:

1. Go to Settings → SIM-cards and mobile networks → Modem mode.
2. Select the Wi-Fi Access Point.
3. Set a network name (SSID) and password (minimum 8 characters).
4. Activate the Wi-Fi Access Point switch.

Xiaomi uses the 2.4 GHz band by default for the handset, but on newer models (Xiaomi 13T, POCO F5) you can choose 5 GHz for higher speed. Note: when an active access point is running out, the battery quickly drains - charge the phone in advance or connect to a power source.

• 🔌 USB-Modem: Connect your phone to your PC via cable and select USB-The modem is in the modem settings, and the computer will define it as a network adapter.
• 📱 Bluetooth modem: suitable for devices without Wi-Fi (such as older tablets) and lower speeds but saves charge.

⚠️ Attention: some operators block the distribution of Internet (tethering) at certain rates. If the access point is turned on, but the devices are not connected, check the terms of your plan. For example, MTS can restrict the distribution on smart tariffs without the option "Internet for devices".

6. Traffic savings and background data

Mobile Internet on Xiaomi can leak out in the background: app updates, photo syncs, in-game ads all consume megabytes to control traffic:

Open the Settings. → SIM-maps and mobile networks → Data transmission. You'll see here:

• 📊 Traffic statistics for the current period (can be manually reset).
• ⚠️ Excess Warning: Set a limit (e.g. 10GB) after which the internet will shut down.
• 🔄 Auto-Update Apps: Disable or Allow Only over Wi-Fi.

For more detailed control, go to Settings → Applications → Data Management.

• 📵 Prohibit background data transfers for individual applications (for example, TikTok or Facebook).
• 🔝 Limit traffic for the applications that consume the most (list sorted by consumption).
• 📥 Disable autoload media in instant messengers (WhatsApp, Telegram).

MIUI 13+ has a Light Mode feature (in battery settings) that not only saves power, but also limits the background activity of applications, reducing traffic consumption by up to 30%, useful if you often go without Wi-Fi.

7. Troubleshooting: What to do if data is not turned on

If the data transfer is not activated or the Internet is unstable, use this instruction:

1. Reboot your phone. It's trivial, but it helps 40 percent of the time -- especially if it crashed after you upgraded your MIUI.
2. Check it out. SIM-Map: Remove and re-insert SIM (Turn off your phone before you do that. Try inserting the card into another slot (if you have Dual-SIM). SIM-cards with a dry napkin (sometimes oxidation interferes with communication).

Reset the network settings:

Settings → System → Resetting settings → Resetting network settings

This will remove all stored Wi-Fi and APNs, but often resolves connection issues.

Update the firmware:

Settings → About the phone → System update

MIUI

Check out the IMEI:

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Mi Flash Tool

If nothing works and mobile data is still not working:

• 📞 Call the operator: it is possible that your number has blocked services (for example, for non-payment).
• 🔧 Change. SIM-Card: Older cards (especially Mini-SIM) may not work properly on new phones.
• 🛠️ Contact the service: if the problem is hardware (for example, the communication module is damaged after a fall).

💡

Before resetting your network settings, record or photograph APN settings and Wi-Fi passwords – after resetting, you will have to reset them.

8 Hidden MIUI functions for network management

There are several hidden features in MIUI that will help optimize data transfer:

• 🔍 High speed mode: on some models (Xiaomi) 12T, POCO F4) customized SIM-The card is a "Speed Priority" option. Turn it on for maximum speed. 4G/5G (But it'll increase battery consumption).
• 📡 Manual network selection: If the automatic operator search doesn’t work, select the network operator manually: → SIM-maps and mobile networks → [Choose. SIM] → Network operators → Manual search
• 🔄 Switching between 4G and 5G: Supported models can be forced to disable 5G, to save charge: Settings → SIM-maps and mobile networks → [Choose. SIM] → Type of network → 4G
• 📵 Blocking background data for individual applications: c Settings → Annexes → Data management can be completely banned from the Internet for unnecessary programs (for example, for pre-installed services Mi Video or Mi Browser).

HyperOS (new firmware for Xiaomi 14 and later) has a feature called "Intelligent Network Switching," which automatically switches the phone from Wi-Fi to mobile data if the signal is weak and back again, to turn it on:

1. Open Settings → Connections and Sharing → Intelligent Network Switching
2. Activate the switch.
3. Select which apps (such as YouTube or Zoom) toggle is allowed for.

Important: hidden settings are sometimes reset after the MIUI update. If after the update, any functions are lost, check their availability again.