The situation of a Xiaomi or Redmi smartphone suddenly disappearing Wi-Fi is familiar to many users. You just watched a high-resolution video, and suddenly the connection icon disappeared or an exclamation point appeared, this can happen for various reasons, from software failures in the shell of MIUI or HyperOS to physical problems with the antenna module.
Unstable wireless network performance is often annoying, as it interrupts important calls via messengers or download files. However, in most cases, the problem lies in power saving settings or conflict. IP-Below we will discuss the main scenarios why WiFi disappears on Android devices of the Xiaomi line, and how to return a stable connection.
Before you carry your gadget to the service center, you need to conduct a number of diagnostic activities. Often users forget about simple things, such as overheating the router or accidentally turning on the flight mode. In this article, we will discuss in detail the software and hardware aspects of the communication module.
The main reasons for unstable connection on Xiaomi
The first thing that a smartphone owner faces when they lose their network is trying to understand the root of the evil, and most often the Android operating system itself, which aggressively manages power consumption, is to blame, and the system can find that the WiFi module is consuming too much resources in the background, and force it to turn it off to save battery power.
Another common cause is router configuration conflicts: If your router automatically switches frequency channels or uses an outdated encryption standard, Redmi's phone may lose communication, and physical obstacles should be considered: thick walls, microwave ovens, and other electronic devices create interference that a smartphone can't always overcome.
You can also keep up with software updates. Once you install a new version of MIUI, you sometimes get errors in the drivers of the network module, which is a temporary phenomenon that developers usually fix in subsequent patches, but it can be uncomfortable.
⚠️ Note: If WiFi is only lost in one particular room, it is likely that the signal level is the problem, not the phone itself.
Software settings and energy saving mode
One of the main reasons why Wi-Fi is turned off on Xiaomi when the screen is off or asleep is the power saving feature. MIUI She's known for her strict background control policy, and she can break a connection if she thinks an active network connection isn't needed right now.
To fix this, you need to go to the battery settings, find the energy-saving section, and check the settings for system services, sometimes switching to Performance or No Limits for mission-critical applications helps, although this can increase charge consumption.
Also worth noting is the WiFi Assistant feature, which is designed to automatically switch to mobile Internet if the wireless signal is weak, but in practice, this algorithm often works incorrectly, breaking the connection even when the signal level is still sufficient to work.
☑️ Energy saving settings
It is important to check whether the option is not enabled "Flight Mode". Sometimes the system "sticks" in this state, and simply switching the slider does not help. In such cases, a deeper reset of network settings is required, which we will talk about in the next sections. Make sure that the date and time settings are automatically determined, since time dissynchronization can also lead to disconnection of the connection with security servers.
Problems with IP-addressing and DNS
A frequent technical failure is the conflict. IP-When your Xiaomi phone connects to the network, the router assigns it a unique digital identifier, if there is already a gadget with the same address (static) in the list of connected devices, or if a pool of addresses is available. DHCP overcrowded, new customers will not be able to access the Internet or will be constantly thrown out of the network.
To solve this problem, it is recommended to change the settings IP s "DHCP" You can do this in the advanced settings of your WiFi network. You need to manually prescribe it. IP-address, gateway and DNS-servers, use of public DNS Google (8.8.8.8) or Cloudflare (1.1.1.1) often solves problems with long search.
Below is a table with approximate values for manually configuring static IP, which are suitable for most home networks:
| Parameter | Default Value (DHCP) | Recommended static value | Description |
|---|---|---|---|
| IP-address | Automatically. | 192.168.1.128 | Unique address of the device on the network |
| Gateway | Automatically. | 192.168.1.1 | Address of your router |
| Length of prefix | 24 | 24 | Subnet mask |
| DNS 1 | Automatically. | 8.8.8.8 | The main Google name server |
Once you change the settings, the phone can lose the network for a few seconds and then reconnect. If the problem was address conflict, the connection will become stable. However, if the router distributes addresses in a different range, you will have to adapt the numbers to your particular network.
Resetting network settings and working with configuration
If simple methods don't work, and WiFi continues to disappear, the effective solution is to completely reset your network settings, which will bring all connectivity settings back to factory values, and it's important to understand that this action will remove all stored passwords from WiFi networks, Bluetooth pairs, and mobile network settings.
You can reset via the settings menu. The path usually looks like: Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth. In some versions of MIUI, this item may be in the "Advanced Settings" or "About the phone".
Once confirmed, the phone will restart. This is normal system behavior. Once turned on, you'll have to re-enter your home Internet password, which helps in 80 percent of software failures, as it clears the cache of network services and resets the erroneous protocol configurations.
⚠️ Warning: Before resetting, make sure you remember the password from your WiFi network, as it will not be possible to recover it from your phone’s memory after the procedure.
Also, check the date and time settings. An incorrect date can cause security certificate errors, causing the phone to permanently disconnect from secure networks.
2.4 GHz vs 5 GHz: What to choose for Redmi
Modern routers operate in two bands: 2.4 GHz and 5 GHz. Redmi smartphones support both standards, but they behave differently. 2.4 GHz range has a longer range and better penetration through walls, but it is heavily overloaded with neighboring routers and household appliances, causing interference and tears.
Range. 5 GHz provides high speed and stability, but has a shorter range.If your phone loses network when you move away from the router, it may be trying to switch to a weak signal. 5 GHz instead of stable 2.4 GHz: In WiFi settings, you can try “Forget” the network and reconnect by selecting a specific frequency if the router broadcasts them as separate networks (for example, “MyWiFi” and “MyWiFi "MyWiFi_5G").
In some cases, it helps to disable the function of "Wi-Fi Assistant" or similar speed optimizers, which constantly monitor the signal quality and can initiate unnecessary reconnections. For stable operation in an area with a large number of networks, it is better to manually select a free channel in the router settings.
Hardware problems and WiFi module
When all software methods are exhausted, you have to consider the possibility of a physical malfunction. In Xiaomi smartphones, the WiFi module is often combined with the Bluetooth module. If you simultaneously have Bluetooth malfunction (for example, the headphones do not connect) and WiFi disappears, this is a sure sign of failure of the combined chip or antenna plume.
It could be a phone drop, moisture or just a manufacturing defect, and sometimes vibration causes the antenna connector to contact the motherboard, and in these cases, light pressure on the back cover in a certain area can temporarily restore the signal, which confirms the hardware nature of the problem.
It's also worth checking if the device is overheating. If the temperature is so high, the processor or the network module can be forced to shut down to protect against combustion. If the phone is hot to the touch when the network is lost, let it cool down and check again.
⚠️ Note: If the phone falls or comes into contact with water, self-opening may result in a loss of warranty.
A unique sign of a hardware antenna breakdown on Xiaomi is when the phone sees the network, but when trying to connect immediately writes “autentification error” or “failed to connect”, even with the correct password, and this happens with all networks around.