The situation of a laptop without wireless internet and a Wi-Fi router that's unavailable or faulty is familiar to many. In such moments, a smartphone becomes a real lifesaver, turning into a fully-fledged mobile router. Device owners Xiaomi, Redmi And POCO often face the need to quickly set up a workspace in a cafe, on a train, or at a dacha.
Internet sharing function, or Wi-Fi hotspot, built into the MIUI shell and the new one HyperOS by default. However, default settings don't always ensure the best connection speed or security. In this article, we'll cover how to properly configure the modem mode, select the optimal frequency, and secure the channel from unauthorized connections.
Using a smartphone as a router isn't just a matter of turning on a single button. It involves a complex set of steps, including frequency band adjustments, power management, and monitoring of connected devices. Understanding these nuances will help you avoid overheating and ensure stable operation of your laptop even with fluctuating cellular signal.
Preparing your smartphone and checking your tariff
Before setting up a hotspot, you need to ensure that your device and SIM card are ready. Mobile operators often differentiate between plans designed specifically for smartphones and universal plans. In the former case, sharing data with other devices may be limited in speed or data volume.
Turn on your mobile internet and check your browser's loading speed. If pages load slowly even on your phone, your laptop's Wi-Fi connection will perform even worse due to the protocol's overhead. Make sure mobile network mode is enabled in your settings. 4G/LTE or 5G, if your operator and location support these standards.
⚠️ Please note: Some carriers automatically detect traffic allocation (TTL) and may block connections or require additional charges. Before using the service, please check your plan's terms in your personal account.
It's also worth paying attention to the battery charge. Hotspot mode significantly increases power consumption, as the radio module is constantly transmitting data. If you're planning a long session, it's best to connect your phone to a charger, but keep an eye on its temperature.
Basic Wi-Fi hotspot setup
Settings interface in phones Xiaomi The process may vary slightly depending on the shell version, but the logic remains the same. First, you need to access the wireless connection management menu. This can be done in two ways: through the notification shade or through the main settings menu.
The first method is the fastest. Swipe down from the top of the screen to open the Control Center. Look for the icon labeled "Tethering" or "Personal Hotspot." If the icon isn't visible, swipe left or tap the edit menu button to add it. Long-pressing this icon will take you directly to advanced settings.
The second method is more traditional. Open the app. Settings, then go to the section Connection and sharing (In older versions of MIUI, this may simply be called “Additional Features” or “More”). What we’re interested in here is the item Wi-Fi hotspotThis menu contains all the key parameters.
☑️ Pre-launch check
Inside the access point menu, you'll see a status switch. Before activating it, we recommend clicking on your network name or the "Access point settings" button. This is where you configure SSID (network name) that your laptop will see, and a password. The password should be complex enough, containing letters and numbers, to prevent neighbors from accessing your traffic.
Selectable frequency range: 2.4 GHz or 5 GHz
One of the most important parameters affecting connection speed and stability is the frequency range. In the access point settings, Xiaomi There is an option to select a range: 2.4 GHz or 5 GHzThe 2.4 GHz band is often set by default, as it has better penetration and compatibility with older devices.
However, for modern laptops, especially if they are in close proximity to the phone, it is preferable to use the range 5 GHzThis range is less crowded with neighboring routers and microwave ovens, ensuring cleaner air and higher data transfer speeds. If your laptop supports the standard 802.11ac or newer, choosing 5 GHz will give a noticeable performance boost.
On the other hand, if the laptop is in another room or behind several walls, the 5 GHz signal may be unstable. In this case, it's best to switch to 2.4 GHz. This range is also essential if you're connecting very old laptops or netbooks that can't physically see high-frequency networks.
You can change this setting in the access point settings menu. Find the "Access point frequency band" line and select the desired value. After changing the band, the network may temporarily disconnect, and the laptop will have to reconnect, as the operating system will see it as a new access point with the same name settings, but on a different frequency.
Hiding SSID and limiting connections
Security is a critical aspect when using public networks. Even with a password, your device constantly broadcasts its presence. In the hotspot settings Xiaomi There's a "Hide Device" feature. When enabled, your phone will no longer appear in the list of available networks on your laptop.
To connect to a hidden network, you'll need to manually enter the network name (SSID) and password in your laptop's Wi-Fi settings and select "Connect to a hidden network." This adds another step to the connection process, but significantly increases privacy, as unauthorized devices won't even know your hotspot exists.
Additionally, the hotspot menu often includes a "Connected Devices" or "Device Management" section. Here, you can see a list of all devices currently using your internet connection. The "Blacklist" feature, or the ability to block a specific device, allows you to instantly disconnect an intruder, even if they know the password.
⚠️ Important: When enabling SSID hiding, be sure to write down the exact network name. Entering it manually on a laptop keyboard without typos will be more difficult than simply selecting it from a list.
It's also worth paying attention to the sleep timer. In the settings, you can set the access point to automatically turn off if no one is connected for 1, 5, or 10 minutes. This is a useful feature for saving battery life and preventing the module from running unnecessarily.
USB modem as an alternative to Wi-Fi
Although this article focuses on wireless connections, it's worth mentioning an alternative method that often works more reliably. If you have a USB cable handy, you can use your phone as a wired network adapter. This method is called USB modem.
The main advantage of a USB connection is the absence of delays typical of a radio channel and the simultaneous charging of the phone. The laptop recognizes the connected Xiaomi Like a regular Ethernet card. To activate, connect your phone to your PC with a cable, then turn on the switch in the "Access Point & Modem" menu. USB modem.
Windows will automatically install the necessary drivers (usually a few seconds), and a wired connection icon will appear in the system tray. The speed will be limited only by the cellular network and the USB port, but the ping stability will be significantly higher than over Wi-Fi.
| Parameter | Wi-Fi hotspot | USB modem |
|---|---|---|
| Transfer speed | High (depending on range) | Maximum (stable) |
| Energy consumption | High (fast discharge) | Low (charging) |
| Latency (Ping) | Medium/High | Low |
| Mobility | High (up to 10-15 meters) | Zero (cable binding) |
Why might my USB modem not work?
If your computer can't connect to the internet via USB, check if USB debugging is enabled in the Developer Options menu. Sometimes installing ADB or Mi PC Suite drivers is required, but in Windows 10 and 11, this happens automatically. Also, make sure the cable is working properly and supports data transfer, not just charging.
Optimization and troubleshooting of connection issues
Despite the simplicity of setup, users may encounter problems. The laptop may see the network but not connect, or it may be connected but not work. Often, the problem lies in DNS or IP addressing settings. Try setting a static DNS, such as Google's, in the adapter properties on the laptop.8.8.8.8) or Cloudflare (1.1.1.1).
Another common problem is the phone Xiaomi The hotspot turns off automatically to save power. In the battery settings, find the app responsible for the hotspot (usually a system process) and set the operating mode to "Unlimited." This will prevent the system from putting the Wi-Fi module to sleep while it's sharing data.
If your laptop's internet speed is significantly slower than your phone's when you're in the same position, check to see if your phone's "Data Saver" or "Data Limit" mode is enabled. Also, make sure your laptop isn't running background Windows updates or cloud storage services, which could be consuming all your bandwidth.
⚠️ Important: If you're sharing internet via 5 GHz and your laptop isn't seeing the network, check the region in your router settings (if applicable) or your Wi-Fi adapter drivers. Some adapters in certain regions don't scan the upper 5 GHz band.
In rare cases, resetting the network settings on the phone itself can help. This will return all network settings to factory defaults, delete saved Wi-Fi passwords and Bluetooth settings, but it often resolves software conflicts with the communication module.
Frequently Asked Questions (FAQ)
How many devices can connect to Xiaomi hotspot at the same time?
MIUI and HyperOS typically allow up to 10 devices to be connected simultaneously. However, the actual number depends on the processor model and network load. With a large number of connected clients, the speed on each device will be split, and the phone may become significantly hot.
Why does my laptop say "No Internet access" even though Wi-Fi is connected?
This could be due to several reasons: your SIM card has run out of data, your carrier is blocking data transfer (TTL), or your DNS settings have become corrupted. Try restarting your phone, checking your balance, or temporarily disabling your antivirus/firewall on your laptop.
Is it possible to share Wi-Fi if the phone itself is connected to a Wi-Fi network?
On most modern smartphones Xiaomi Android 10 and above have a feature called "Wi-Fi Repeater." It allows you to receive and share Wi-Fi data. However, this feature doesn't work on all models and may be hidden in the engineering menu or require third-party apps.
Does the phone get very hot when sharing the Internet?
Yes, this is normal. The Wi-Fi module and processor are working in enhanced mode, converting the signal. It is recommended to remove the phone's case if it has a thick one, and avoid placing it under a pillow or in direct sunlight. If the system becomes too hot, it will automatically disable the access point.