Every portable device user is familiar with the experience of their landline internet suddenly going down or needing urgent internet access while away from home. Xiaomi and Redmi smartphone owners have a significant advantage, as the MIUI user interface (or its new version, HyperOS) offers advanced hotspot capabilities. Wi-Fi distribution Using a remote work or study app from an Android device isn't just a backup option, but a fully-fledged solution for remote work or study that requires proper configuration for maximum effectiveness.
Turning a smartphone into a router is technically simple, but it has its own nuances regarding data security and battery consumption. Modern Redmi models are equipped with Wi-Fi 5 and Wi-Fi 6 modules, which enable high data transfer speeds comparable to standard home routers. However, to ensure a stable connection, the laptop needs to select the correct frequency band and encryption standard. In this article, we'll walk through all the setup steps in detail and discuss hidden features that can help optimize network performance.
Checking mobile traffic and operator settings
Before activating tethering, it's crucial to ensure your data plan allows you to use your smartphone as a hotspot. Many carriers separate data usage into "phone" and "tethering" and may block or limit speeds when connecting external devices. Check your remaining data in your carrier's app or via USSD commands to avoid unpleasant surprises like blocked numbers or charges.
It's also worth paying attention to the network coverage in the place where you plan to work. For stable operation of the laptop, Android smartphone A strong 4G (LTE) or 5G signal is desirable. In weak signal conditions (1-2 bars), the speed on a connected laptop may be extremely low, and the phone's battery will drain extremely quickly due to the module's constant attempts to maintain a connection.
⚠️ Note: Some carriers use TTL (Time To Live) technology to determine internet tethering. If you notice that your laptop's internet connection isn't working when mobile data is enabled, your provider may be blocking such connections. In this case, you'll need to change the TTL in your phone's settings (via the engineering menu or root access), but this may violate your contract with your carrier.
Make sure your phone's data plan is enabled. Sometimes users forget to enable this feature, relying solely on Wi-Fi. To quickly check, open the notification shade and ensure the mobile network icon is active and not crossed out.
Basic Wi-Fi hotspot setup on Redmi
The main way to manage the modem function in MIUI is in the settings menu. You need to go to the section Settings → Wi-Fi HotspotThe main switch that activates the hotspot mode is located here. However, before turning it on, you should go to the "Wi-Fi Hotspot Setup" menu to set the correct security and network identification parameters.
The Access Point Name (SSID) field is by default set to your smartphone model name, for example, Redmi Note 12You can change it to any name you like, using Latin letters, numbers, and some special characters. This will help you easily find your network in the list of available connections on your laptop, especially if you're in a crowded area with many open networks.
- 📱 Security standard: Choose WPA2 PSK or WPA3 PSK for maximum security.
- 🔑 Password: must contain at least 8 characters, including letters and numbers.
- 📡 Frequency range: 2.4 GHz (compatibility) or 5 GHz (speed).
Pay special attention to the "Password" field. This is what you'll need to connect your laptop. The system automatically generates a complex password during initial setup, but you can change it to something more memorable if you plan to connect the same devices frequently. Avoid using simple combinations like "12345678," as this could make your network vulnerable to unauthorized connections.
Selectable frequency range: 2.4 GHz or 5 GHz
One of the key settings affecting connection speed and stability is frequency band selection. The Redmi hotspot menu usually has an option called "Select AP frequency band." By default, this is often set to automatic mode or 2.4 GHz, which ensures maximum compatibility with older devices but doesn't provide maximum speed.
Range 5 GHz Provides higher data transfer speeds and is less susceptible to interference from nearby networks and household appliances (microwaves, Bluetooth devices). If your laptop supports this standard (which is true for most models released after 2015), we strongly recommend switching to it. This is especially important for video calls, online streaming, or downloading large files.
⚠️ Note: When switching to 5 GHz, older laptops or devices with outdated Wi-Fi adapters may simply not see your network. If your laptop doesn't find the access point, go back to your phone's settings and select the 2.4 GHz band.
On the other hand, the 2.4 GHz frequency has better penetration. If your phone is in one room and you're working in another, the 2.4 GHz signal will be more stable, albeit slower. The choice depends on your priorities: speed in the immediate area or coverage over a distance.
Connecting a laptop to the Redmi network
Once the hotspot is activated on your phone, you need to pair it with your laptop. A QR code is usually displayed on the smartphone's screen in the hotspot menu, allowing you to connect to the network simply by scanning it with the camera (if your laptop has a QR code scanning feature or a webcam with scanning software). However, the classic method of scanning for networks remains the most reliable.
On your laptop, click the Wi-Fi icon in the tray (usually at the bottom right of the screen) or go to Settings → Network and Internet → Wi-FiIn the list of available networks, find the name you set earlier (or the default Redmi model name). Click "Connect."
☑️ Laptop connection algorithm
The system will prompt you for a password. Enter the characters carefully, paying attention to the case. If you copied the password from your phone and are pasting it on your computer, make sure you didn't copy any extra spaces. After successful authentication, Windows or macOS will set the network status to "Connected" and will likely ask if you want to make this computer visible to others. For public networks (cafes, airports), it's best to select "No," which will enable strict firewall mode.
If the connection is established but the internet isn't working (the "No internet access" icon appears), try tapping "Limit traffic" or "Block devices" in the hotspot menu on your phone to check if your laptop is accidentally blocked. Temporarily enabling airplane mode on your phone and then turning it off to reboot the communication modules also helps.
Managing connected devices and limits
MIUI provides a convenient tool for monitoring who's connected to your network. The hotspot menu has a "Connected Devices" section. This displays a list of all devices currently using your internet connection, along with their MAC addresses and the amount of data transferred.
You can manually limit the number of devices that can be connected. For example, you can set a limit of one device to prevent unauthorized access, even if they know the password. This is useful in public places where brute-force attacks or WPS vulnerabilities are possible (although on Redmi, WPS is often disabled by default).
| Parameter | Recommended value | Impact on work |
|---|---|---|
| Device limit | 1-3 | Saves traffic and battery |
| Wi-Fi timeout | 10 minutes | Automatically turn on the access point when there are no clients |
| Range | 5 GHz | Maximum speed for a laptop |
| Security | WPA2/WPA3 | Protection against data interception |
A "Wi-Fi Hotspot Timeout" feature is also available. If no one is connected to the network for a set period of time (e.g., 10 minutes), the phone will automatically turn off tethering. This prevents you from forgetting to turn off tethering and running out of battery by the end of the day. Set this parameter to 10 or 15 minutes for optimal battery balance.
Hidden features of the engineering menu
In the Android engineering menu (code ##4636##) You can try changing the preferred network type, which can sometimes help improve the signal in poor reception areas, but you should do this carefully to avoid disrupting the settings of the operator's base stations.
Energy optimization and troubleshooting
Sharing Wi-Fi is a resource-intensive process that significantly strains the smartphone's processor and radio module. Your Redmi phone may become noticeably hot, and the battery will drain quickly. To minimize the risk, it's recommended to keep the device charging while using it or ensure proper heat dissipation (remove the device's case, and avoid placing it on soft surfaces).
If your laptop connects, but the internet is slow or keeps dropping out, try the following:
1. Restart your phone (classic power off and on).
2. Reset the network settings on your phone (Settings → Connection and Sharing → Reset Wi-Fi, Mobile Network, and Bluetooth).
3. Check if the "Data Saver" mode is enabled on your phone in the hotspot settings, which may limit background activity.
⚠️ Caution: Running the hotspot at maximum power for extended periods can cause the battery to overheat and wear out faster. If your phone feels hot to the touch, take a break or reduce screen brightness and close heavy apps on your phone.
In some cases, your laptop's antivirus or firewall may block incoming connections, considering the public network dangerous. Check your network profile settings in Windows: if you trust your phone, switch the network type from "Public" to "Private." This may improve connection stability and allow access to shared resources.
Frequently Asked Questions (FAQ)
Why does the laptop see the Redmi network, but says "No Internet access"?
Most often, the problem lies with DNS settings or a lack of mobile data. Check that the internet is working on the phone itself (turn off Wi-Fi and test using a mobile network). Also, try changing the frequency range from 5 GHz to 2.4 GHz or vice versa in the phone's hotspot settings. Sometimes resetting the network settings on both devices helps.
Is it possible to share Wi-Fi if the phone is connected to a Wi-Fi router?
This is possible on most modern Xiaomi smartphones that support the Wi-Fi Repeater feature. The hotspot settings should have a "Broadcast Wi-Fi" or similar option. If this option isn't available, the phone will disconnect from Wi-Fi and start broadcasting 4G/5G mobile data when the hotspot is enabled.
Does this really harm the phone battery?
Intensive radio module operation and heat accelerate the chemical aging of lithium-ion batteries. If you use modem mode continuously for several hours a day, battery capacity may decrease faster than usual. For regular use, it's better to purchase a portable 4G router.
How to hide your network name (SSID) on Redmi?
In the access point settings, find the "Hide device" or "Hide SSID" option. Once enabled, the network will no longer appear in the general list on your laptop. To connect, you'll need to manually enter the network name and password in the "Connect to a hidden network" menu on your computer.