When a smartphone loses internet access, it often catches you by surprise, especially if you urgently need to send a file or check email on another device. Xiaomi, Redmi And Poco Periodically, users encounter situations where the standard Wi-Fi hotspot function stops responding or doesn't activate at all. This could be caused by a software glitch, incorrect frequency settings, or even a block by their network operator.
In this guide, we'll take a detailed look at why these issues occur and how to fix them without calling a service center. We'll examine both the software aspects of the shell MIUI And HyperOS, as well as hardware limitations that may affect connection stability.
Before attempting any complex manipulations, it's important to understand that the problem could be as simple as module overheating or exhaustion of the traffic limit. Access point — a resource-intensive function that requires the correct operation of the Android network stack.
Software failures and reboot of network modules
The most common reason why the modem mode does not work is a temporary software failure in the operating system. Shell MIUI has its own power management features that sometimes aggressively "throttle" background processes responsible for network interaction. In such cases, a simple but effective method can help: rebooting the network settings or the device itself.
Often users forget that it is turned on airplane mode Or conflicting VPN settings may be blocking the creation of a new network. It's also worth checking whether data saving mode, which prevents internet sharing with other devices, is enabled. If, after turning on the hotspot, it immediately turns off or stays in the "Connecting" status, the problem is almost certainly a software conflict.
To resolve the error, try resetting your network settings. This won't delete your personal files, but it will reset your Wi-Fi, Bluetooth, and mobile data settings to factory defaults. This option is usually found in the menu. Settings → Connection and sharing → Reset Wi-Fi, mobile networks, and Bluetooth.
If a simple reboot doesn't help, it's worth checking out system updates. Developers Xiaomi Patches are regularly released to fix network module issues. An outdated firmware version may contain bugs that have already been fixed in newer builds.
Bandwidth and device compatibility issues
One of the technical reasons why an access point is not visible to other devices is a mismatch in frequency bands. Modern smartphones Xiaomi By default, they can create a network in the 5 GHz band to ensure high speeds. However, many older laptops, tablets, and budget devices simply don't support this frequency and won't physically see your network.
To resolve this issue, you need to force the access point to switch to 2.4 GHz mode. This band has a longer range and is compatible with the vast majority of devices, although it has a lower maximum data transfer rate. This can be done in the access point creation menu, where you'll find the "AP Band" or "Band" option.
- 📡 2.4 GHz — maximum compatibility, better penetration of walls, but lower speed and more interference from neighboring routers.
- 🚀 5 GHz - high speed, less interference, but short range and problems with older devices.
- 🔄 Auto — the system itself selects the frequency, but often errs in favor of 5 GHz, hiding the network from older clients.
It's also worth considering that the phone may become hotter when using the 5 GHz band. If the device's casing gets hot, the system may automatically disable the Wi-Fi module to protect its components. In this case, using the 2.4 GHz band will be a more stable solution for long-term data transfer.
It's important to note that in some regions, the use of certain channels in the 5 GHz band may be legally restricted, which can also impact network visibility. If you're traveling, changing the region in your phone's settings may temporarily resolve the issue.
Restrictions from the telecom operator
Not all problems are rooted in the phone itself. Often, the reason is that the access point Wi-Fi on Xiaomi If your connection isn't working, there are limitations in your mobile operator's data plan. In recent years, many mobile providers have introduced blocking or speed limits when tethering.
Operators determine traffic distribution by value TTL (Time To Live). When you connect your laptop to your phone, data packets pass through it, and the TTL value changes. The carrier detects this change and either blocks the connection, charges additional fees, or simply throttles the speed to a minimum (e.g., 64 or 128 kbps).
⚠️ Please note: Data rates may be changed unilaterally by the operator. We recommend checking your current plan terms in your personal account or the operator's mobile app before attempting to share large amounts of data.
Some believe that installing special apps to change the TTL can bypass this restriction. While this does work on modern Android versions with root access, on regular devices without root access, such methods are often useless or require complex VPN tunnel setup.
If you notice that the speed on your connected device drops immediately after you start downloading, while everything works fine in your phone's mobile browser, this is a sure sign of throttling by your provider. In this case, consider purchasing a special modem plan or an unlimited data plan with tethering.
Security settings and network hiding
Sometimes users create problems for themselves by accidentally enabling enhanced security features. In the access point settings on Xiaomi There's a "Hide device" option. If enabled, your network won't appear on other devices, and you'll only be able to connect to it by manually entering the exact name (SSID) and password.
It's also worth paying attention to the encryption type. Modern security standards recommend using WPA3, but older devices may not support this protocol and simply not see the network or refuse to connect. In this case, you need to switch the security type to WPA2-Personal, which is the gold standard of compatibility.
Check the list of blocked devices. You may have accidentally blacklisted a device you want to use, and now it can't access the internet, even though the network is visible. Access control is located in the access point menu, where all connected clients are displayed.
How do you know who is connected to your hotspot?
The Xiaomi hotspot menu displays a list of connected devices. If you see an unfamiliar name or MAC address, immediately tap it and select "Block." It's also recommended to change the password to a more complex one containing letters and numbers.
Remember that complex passwords are great, but they're difficult to enter manually on mobile devices. If you frequently share your internet connection with friends, it's more convenient to use the QR code connection feature built into MIUI. This will eliminate typing errors.
Hardware limitations and overheating
A smartphone is not a dedicated router. Its antenna module and processor are not designed for 24/7 operation under high load. When actively distributing Wi-Fi, especially if simultaneously downloading files or browsing, the device's temperature can rise critically.
IN Xiaomi And Poco Thermal protection mechanisms are built in. If the sensors detect overheating, the system forcibly disables the Wi-Fi module or reduces its power, resulting in a disconnected connection. This is a normal response, designed to prevent hardware failure.
Furthermore, poor cellular coverage forces the phone to boost the signal, which consumes more power and generates more heat. Combined with the hotspot, this quickly leads to battery drain and heat generation.
| Factor | Impact on work | Recommendation |
|---|---|---|
| Case temperature | Module shutdown at >45°C | Remove the cover and place it on a cold surface. |
| Battery charge | Block distribution at < 10-15% | Connect the charger |
| 4G/5G signal strength | High power consumption | Find a location with better reception or use 3G |
| Number of clients | Speed drop and load increase | Limit the number of connections to 2-3 |
If your phone is old or has a damaged battery, it will heat up faster. In such cases, long-term Wi-Fi sharing may be impossible without external cooling or a power source.
MIUI and HyperOS specific settings
Shells from Xiaomi They have many additional features that can conflict with the modem mode. For example, the "Game Boost" feature or aggressive power saving can shut down the sharing process, considering it a background process and unimportant.
Check the battery settings for system services. Make sure there are no background activity limits set for the Access Point process or Wi-Fi system services. Path: Settings → Battery → Battery protection → Settings (or similar in your software version).
Also worth mentioning is the function DNSIf your DNS (Private DNS) settings contain an address that is currently unavailable, this may block internet access on connected devices, although the Wi-Fi network itself will remain operational. Try switching this setting to "Auto" or "Disabled."
☑️ Xiaomi Settings Diagnostics
Sometimes clearing the cache of the system app "Settings" or "Wi-Fi" can help. You can do this through the application management menu, find the relevant system process, and select "Clear Cache." Don't confuse this with "Clear Data," as this will reset all your network settings.
Frequently Asked Questions (FAQ)
Why does the access point turn off by itself after a couple of minutes?
Most likely, the power saving timer or overheating protection is triggered. Check the timer settings in the hotspot menu (if available in your MIUI version) and make sure the phone isn't overheating. This can also happen if no one has connected to the network for a specified period of time.
Is it possible to share Wi-Fi if there is no SIM card on the phone?
Yes, you can use your phone as a Wi-Fi repeater (amplifier) if it's connected to another Wi-Fi network. This feature is called "Wi-Fi Repeater" and is available on many Xiaomi models. However, a SIM card is required to share mobile data.
Why does my laptop see the network, but it says "Unable to connect"?
Check the encryption type (try WPA2), make sure you haven't reached the maximum number of connected devices (usually up to 10), and try "Forget Network" on your laptop and then re-enter the password. Your PC's antivirus software may also be interfering.
Does having Bluetooth enabled affect the hotspot's operation?
Both modules operate in the 2.4 GHz band and can interfere with each other. If you're not using a Bluetooth headset or watch, it's best to turn off Bluetooth to ensure a stable connection and conserve battery life.