When the WiFi hotspot on your Redmi smartphone suddenly stops working, it can ruin your entire plan, especially if internet access on your computer or tablet is vital. Xiaomi device owners often encounter a feature that worked flawlessly yesterday, but now simply doesn't launch or doesn't recognize connected devices. This can be due to software glitches in MIUI or HyperOS, or incorrect frequency range settings.
Before you panic and take your device to a service center, it’s worth doing some self-diagnosis. diagnostics systems. Often, the problem stems from a simple network service cache overflow or an IP address conflict after a firmware update. In this article, we'll examine all possible causes of this function failure in detail and offer step-by-step troubleshooting solutions.
The variety of Redmi models, from budget Note series to flagship versions, implies differences in the hardware of their communication modules. Therefore, there is no universal "one-button" solution, and sometimes you have to experiment with security settings or bandwidth. Let's start with an analysis of the basic settings.
Analysis of basic access point settings and frequency ranges
The first thing to check if WiFi sharing isn't working is the frequency range settings. Many modern devices support the standard. 802.11ac, operating at a 5 GHz frequency, offers high speeds but has a shorter range and is less effective at penetrating walls. Some older devices simply cannot detect a network created in this frequency range.
To fix the situation, you need to force the modem to switch operating modes. Go to the settings menu and select Wi-Fi hotspot and find the "AP Band" setting. Try changing the value from 5 GHz to 2.4 GHz. This often resolves the network visibility issue for clients.
It's also worth checking your security settings. Encryption protocol WPA3The encryption protocol implemented in newer versions of Android may be incompatible with some client devices. If you've set the security level to maximum, try temporarily downgrading to WPA2 PSK.
⚠️ Attention: Changing the frequency band may temporarily disconnect from already connected devices. Reconnect them after applying the settings.
It's important to understand that choosing a band affects not only speed but also signal stability in noisy environments. In apartment buildings, the 2.4 GHz band is often overloaded with neighboring routers, which can lead to a drop in speed but provides better range.
Network service failures and MIUI software errors
The MIUI skin installed on Redmi smartphones is known for its aggressive power optimization. The system can forcibly kill processes responsible for network activity if it detects them as draining too much battery. This is one common reason why the hotspot turns off on its own after a few minutes of use.
To resolve this issue, you need to check the power saving settings for system services. Go to the section Settings → Battery → Battery Saver And make sure there aren't any strict limits on system processes. It's also worth disabling "Super Power Saving" mode, which often blocks background data transfers.
Another source of problems may be accumulated errors in network settings. Resetting network settings to factory defaults helps resolve configuration file conflicts. Please note that after this procedure, you will have to re-enter passwords for all saved WiFi networks.
☑️ Actions in case of software failure
Don't forget about the possibility of system file corruption after an unsuccessful update. If the problem appears immediately after the update, it might be worth waiting for a patch or considering downgrading the firmware.
Traffic limits and operator restrictions
Users often forget that internet tethering may be limited not by the phone itself, but by the mobile operator's plan. Many mobile providers in Russia and the CIS set limits on the amount of data that can be shared via a hotspot, or completely block this feature on certain plans.
If you see a message stating that tethering is unavailable, or the internet on the connected device isn't working even though websites open on your phone, check your plan's terms. Carriers can determine the device type by the TTL (Time To Live) parameter. When a second device is connected, this parameter changes, and the provider blocks the connection.
To bypass such restrictions, advanced users use methods to change the TTL at the system level, but this requires root access or the use of specialized apps, which may void the device's warranty. A more legal option is to enable the "Unlimited Data Sharing" option with your carrier.
| Operator | Type of restriction | Solution |
|---|---|---|
| MTS | Limit GB per month | Connecting the "Super BIT" option |
| Beeline | Blocking distribution | Tariffs with the "Highway" option |
| Megaphone | Decrease in speed | Purchasing additional GB |
| Tele2 | Paid option | Activating the "Modem Mode" service |
It's also important to keep in mind that operators are constantly updating their seeding detection methods. What worked yesterday may be blocked by network algorithms today.
IP address conflicts and DHCP server problems
The smartphone's internal DHCP (Dynamic Host Configuration Protocol) IP address distribution mechanism can malfunction, especially if multiple devices have previously connected to the access point. In this case, the new device simply fails to receive an address and cannot connect to the network, even though the WiFi connection is formally established.
To resolve this issue, try changing the access point name (SSID). This will force the system to create a new network profile with clear DHCP settings. Go to Access point settings → Network name (SSID) and set a new unique name.
Switching the security type is also an effective method. Changing the password and encryption protocol often triggers a restart of the network service at the software level. Ensure that the password meets complexity requirements to prevent the system from rejecting it as insecure.
⚠️ Attention: Avoid using special characters in the network name or password if your client devices are older. Some characters may not be encoded correctly.
If the issue persists, you can try statically assigning an IP address to the connecting device (laptop or tablet). Set the address to the same subnet as the phone's gateway (usually 192.168.43.X) and point it to Google's DNS servers (8.8.8.8).
The Impact of Third-Party Apps and VPN Services
Installed memory cleaners, antivirus programs, or VPN clients can hijack control of the network interface. If you have an active VPN tunnel, traffic from the access point may attempt to route through it, resulting in connection errors or no internet connection on the client.
Check the list of running apps. If you use the "Always-on VPN" feature, disable it before enabling the hotspot. Also, some internet boosters may conflict with Android's default data flow management features.
In rare cases, malware can block network ports. Run a full scan of your device using a reliable antivirus scanner, such as the one built into your system. Security from Xiaomi or a third-party solution.
How to check if a VPN is blocking seeding?
Disable the VPN app completely (don't just minimize it, stop the process) and try connecting again. If the internet connection returns, the issue is with the tunneling settings.
It's also worth mentioning firewall apps, which can block incoming connections for system services. Check the permissions for the Settings or Access Point app in the permissions menu.
WiFi module hardware failure and overheating
If software solutions don't help, a physical issue cannot be ruled out. The WiFi module in Redmi smartphones is located near the processor and can become very hot when actively sharing data, especially on 4G/5G networks. When the temperature reaches a critical point, the throttling system (forced performance reduction) can disable the radio module for protection.
Touch the top of the phone's case while distributing. If the device feels hotter than usual, try removing the case and placing it on a cool surface. Constant overheating can cause the antenna module to degrade or the contacts to fail.
If the access point doesn't turn on at all (the button is inactive or turns off immediately), this may indicate a faulty WiFi module. This is often accompanied by problems with receiving a regular WiFi signal or Bluetooth.
In such cases, professional diagnostics at a service center are required. Unexperienced disassembly of modern Redmi monoblock smartphones can result in damaged cables or loss of water resistance.
Frequently Asked Questions (FAQ)
Why does the access point turn off by itself after 5 minutes?
Most likely, the power saving timer is triggered. In the hotspot settings, find "Timeout" or "Auto-power off" and set it to "Unlimited" or the maximum available time.
My phone is broadcasting WiFi, but my computer isn't. What's wrong?
Check that your phone has mobile data. Also, make sure your hotspot settings don't restrict the type of devices that can connect, or that your carrier's data limit hasn't been reached.
Is it possible to share WiFi if the phone is connected to a WiFi network?
This feature (Wi-Fi Repeater) is available on most modern Redmi models running Android 10 and above. However, in older versions of MIUI, enabling a hotspot on the phone would disable WiFi, and only mobile data would be available.
How to increase the hotspot range on Redmi?
Increasing the transmitter power programmatically is impossible without root access and the risk of damaging the module. The best way is to use the 2.4 GHz band and remove any physical obstacles between the phone and the client.