Owning a modern smartphone Xiaomi or Redmi opens access to a number of features that significantly simplify the everyday use of gadgets. One of the most popular features is fast internet sharing via QR code, allowing you to instantly connect friends and colleagues to your network without having to dictate a complex password. This feature is especially useful when you need to quickly set up a hotspot in a cafe, office, or meeting, and manually entering characters is too time-consuming.
However, despite the brand's popularity, users often encounter confusion in the shell interface. MIUI or HyperOSMany people are looking for a way to "scan" a code to gain access, when in reality, their device must generate the code. Understanding the difference between client mode and access point mode is critical for proper setup. Wi-Fi moduleIn this guide, we'll cover all the nuances of creating and reading codes, as well as troubleshooting common errors.
It's worth noting that the operating system's operating algorithms may differ depending on the firmware version. What worked on Android 11, may be hidden deep in the menu on newer versions. Therefore, it's important not only to know the sequence of actions but also to understand the logic behind the network settings. The QR code generation function for Wi-Fi distribution on Xiaomi is activated exclusively through the "Access Point" menu, and not through the standard camera scanner menu.
How QR codes work in the Xiaomi ecosystem
Rapid response technology known as QR code, has become the de facto standard for transmitting network credentials. In devices Xiaomi This mechanism is deeply integrated into system services. When you create a hotspot, your smartphone encodes the SSID (network name), encryption type, and password into a graphic pattern. Other devices, reading this pattern through the camera, automatically generate a connection request, eliminating the need for manual input.
It's important to distinguish between two data transfer directions. The first is when your phone acts as a router and generates a code for others. The second is when your phone scans the code to connect to another network. When searching for "how to enable a QR code on Xiaomi WiFi," we're most often talking about the first situation: enabling tethering mode with visualization of the settings. Security System MIUI requires confirmation of actions to prevent unauthorized
⚠️ Note: The settings interface may vary depending on the regional firmware version (Global, China, EEA). If you don't see the options described, check for system updates or change the region in the basic settings.
Technically, the generation process occurs locally on the device and doesn't require an internet connection, as the code contains all the necessary static information. However, for a 3G/4G/LTE network to function, active mobile data is, of course, required. WPA2 protocol or WPA3, used by default, provides reliable encryption of transmitted data, even if it is presented as an image.
How to enable QR code generation for Wi-Fi sharing
To turn your smartphone into a hotspot with the ability to quickly connect guests, you need to activate the corresponding mode in the settings. This is a basic feature available on all modern models, from budget ones. Redmi Note to the flagship Xiaomi MiThe process involves several steps that may seem obvious, but have their own nuances depending on the interface version.
First, you need to access the network connection control center. This is usually done through the notification shade, but for initial setup, it's better to use the deeper menu. Here, you'll set up the parameters of your future network, including the name and password, which will then be encrypted. Without first configuring the access point, the code generation button will be inactive or hidden.
- 📱 Open "Settings" and go to "Connection and Sharing" or "Wi-Fi Hotspot".
- 🔘 Turn on the "Wi-Fi hotspot" switch and tap on the network name to access advanced settings.
- 🔑 Set a strong password and select a security standard (WPA2-Personal is recommended).
- 🖼️ Find the "QR code" button or square code icon at the top of the hotspot settings screen.
After completing these steps, an image will appear on the screen that can be shown to other users. SSID The network will be visible at the top of the screen, and the code itself will occupy the central area. If you've changed the security settings or network name, you'll need to regenerate the code, as the old one will point to non-existent parameters. The system automatically updates the visualization whenever the configuration changes.
☑️ Check before distribution
Instructions for scanning the code from another device
If you are on the other side of the fence and you need to connect to the network created on Xiaomi, the process will be different. You don't need to look for special apps, as the scanning functionality is built into the standard camera or system scanner. The main thing is to have a steady hand and good lighting to ensure the matrix is read correctly.
Hold the receiving device's camera close to the sender's screen. The distance should be optimal: not too close, so the camera has time to focus, and not too far, so the code takes up a significant portion of the viewfinder. Once the system recognizes the pattern, a pop-up notification will appear on the screen prompting you to connect to the Wi-Fi network.
In some cases, especially on older versions Android For devices with other manufacturers' custom skins, the automatic pop-up window may not appear. In this case, you'll need to manually launch the Scanner app or use the Google search widget. After scanning, the device will automatically insert the saved data into the Wi-Fi settings and request connection confirmation.
| Action | Expected result | Possible problem |
|---|---|---|
| Pointing the camera | Focus on code | Glare on the screen |
| Recognition | Vibration or sound | Too far |
| Pop-up window | Offer to connect | No system response |
| Confirmation | Status "Connected" | Incorrect password |
Configuring security and access point settings
Before you start sharing internet with others, make sure your network is secure. Open access points pose a risk of data interception, so encryption is essential. In the settings menu Xiaomi You can configure in detail who can connect to your device and how.
Particular attention should be paid to the list of connected devices. Owners Xiaomi They can see in real time who is consuming their data and, if necessary, block unwanted users. This is done through the same interface where the QR code is generated. Regularly checking this list helps avoid situations where your mobile data plan runs out unexpectedly quickly.
- 🛡️ Encryption: Always use WPA2-PSK or WPA3, avoid open networks (None).
- 👥 Device limit: Set the maximum number of connected clients (usually up to 10).
- ⏱️ Time-out: Set your hotspot to turn off automatically when inactive to save battery.
You can also change the frequency range in the advanced settings. Switching between 2.4 GHz And 5 GHz Affects signal speed and range. For most indoor scenarios, 2.4 GHz provides better compatibility with older devices, while 5 GHz provides maximum speed for modern devices, but at a shorter range.
Hidden frequency settings
In some MIUI versions, you can change the frequency band by tapping "Access Point Settings" -> "AP Band." The 5 GHz option may not be available if your mobile operator or device driver does not support this feature in tethering mode.
Common errors and how to fix them
Even if you follow the instructions precisely, technical difficulties may arise. These are most often related to shell software glitches or network protocol conflicts. Understanding the nature of these errors allows you to quickly restore functionality without a complete device reboot.
One common issue is when the QR code is displayed, but other devices don't see it or return an error when connecting. This could be because the sending device doesn't have mobile data enabled, or the carrier is blocking tethering. In the latter case, changing the QR code can help. TTL in hidden settings or using specialized applications.
⚠️ Note: If the "Tethering Hotspot" button is grayed out, check that Airplane Mode is not enabled and that your SIM card is active. The feature may also be blocked if the battery is low.
Another common error is incompatibility of encryption standards. If you install on Xiaomi If you use the latest security protocol and the receiving device (e.g., an older laptop or tablet) doesn't support it, the connection will fail. In such cases, it's recommended to temporarily lower the security level to WPA/WPA2 mixed mode to ensure maximum compatibility.
If all else fails, try resetting your network settings. This will reset all network settings to factory defaults, delete saved Wi-Fi passwords and Bluetooth settings, and often resolve underlying driver conflicts. After resetting, you'll need to re-enter your personal network passwords, but network sharing should work correctly.
Alternative ways to distribute Internet
While a QR code is a convenient and modern method, it is not the only possible one. The user's arsenal Xiaomi There are other internet sharing tools that may be more relevant in certain situations. For example, sharing passwords via NFC or using the "Mi Share" feature (although the latter is more focused on files, it is tightly integrated with network modules).
The classic method is dictating the password or displaying it in text format in the hotspot settings. This method seems archaic, but it remains the most reliable if the person you're talking to has a broken camera or no NFC module. Furthermore, on devices with Android 10 and above, it became possible to transmit a password via Bluetooth pairing, which is also an alternative to a QR code.
For advanced users, customization methods are available through ADB (Android Debug Bridge). Using the command line, you can create access points with specified parameters, change the MAC address, and other hidden characteristics. However, for the average user, using the graphical interface MIUI remains the safest and simplest option.
- 📶 NFC: Instant network profile transfer when devices touch (requires support from both devices).
- 💬 Messengers: Sending an encrypted password via Telegram or Signal.
- 🔗 USB modem: Connecting your phone to a PC via cable to share the Internet without losing speed.
The impact of Wi-Fi distribution on device battery life
Actively using a smartphone as a router places a heavy load on all system components. The communication module operates in constant data transmission and reception mode, resulting in significant power consumption. It's important for users to be aware that prolonged internet use can quickly drain the battery, especially on models with a capacity of less than 4000 mAh.
While the access point is running, the processor may also become hot as it has to process network packets and manage connections. Xiaomi Implements thermal control systems that can forcibly reduce screen brightness or limit performance to protect the device from overheating. Therefore, it is not recommended to leave the phone in the sun or under a pillow while sharing.
To minimize the negative impact on battery life, we recommend using power-saving settings. Limiting the number of connected devices and setting an auto-off timer can help extend battery life. If you plan on a long session, it's best to keep the device connected to a power source or use a power bank.
Why does my phone get very hot when the hotspot is turned on?
Heating is caused by the intensive operation of the radio module, which simultaneously receives a signal from the operator's base station and transmits it via the Wi-Fi antenna. This double workload is comparable to running heavy games. Using a case with poor heat dissipation can exacerbate the situation.
Is it possible to share Wi-Fi if there is no SIM card on the phone?
No, you need an active SIM card with a data plan to share your mobile data. However, if your phone is connected to a Wi-Fi network, some models can rebroadcast the signal (Wi-Fi Repeater), but this feature isn't supported by all devices and Android versions.
How to hide your network name (SSID) on Xiaomi?
In the access point settings, you can find the "Hide device" or "Hide SSID" option. In this case, the network will not appear in the list of available networks, and to connect, you will need to manually enter the network name in the receiving device's Wi-Fi settings. QR codes will not work in this mode.
Does Wi-Fi sharing affect mobile internet speed?
Yes, the speed is shared among all connected clients. If multiple devices connect to your access point and start downloading updates or watching videos, the speed will drop on each of them. Furthermore, the streaming process itself creates a slight overhead on the channel.