Modern smartphones Xiaomi, working on shells MIUI or HyperOS, have a complex wireless connection management system that often confuses users. Unlike stock Android, where the connection process is as simple as possible, the Chinese manufacturer's firmware implements additional security and optimization features that can block automatic network login. When a device stops connecting to its usual router automatically, it causes significant inconvenience, especially when constantly moving between home and the office.
The problem could be a simple software glitch, or it could be related to specific power saving settings or advanced WiFi options. Auto-connection This feature allows the gadget to instantly establish a connection to a saved access point without requiring a password. However, the system's algorithms can "forget" network priorities or consider the connection unstable, preferring to switch to mobile data. Understanding the communication module's logic will help you quickly restore convenient functionality.
In this article, we'll cover every setup step in detail, from basic switches to hidden engineer menus. You'll learn why your phone ignores known networks and how to force it to work correctly. We'll also cover security issues, as automatically connecting to open hotspots can pose risks that every owner should be aware of. Redmi or Poco.
Basic activation of the function in the settings menu
The first step should always be checking the obvious settings, as the feature is sometimes accidentally disabled after a system update or factory reset. You need to go to the main menu and select Settings, then find the item Wi-FiA list of available networks and the module's current status are displayed here. Make sure the activation slider is set to "On," and there's a checkmark or lock icon next to your home network name, confirming that credentials are saved.
If the network is saved but doesn't connect automatically, click the arrow or network name to open the extended menu. In some versions MIUI There's a separate "Auto-Connect" switch that must be enabled. If this switch is missing, it may indicate that the system is detecting a problematic network or is using global priority settings. Network profile should be marked as "Trusted" or "Private" and not "Public".
⚠️ Attention: If you can't select your network type after updating your firmware, try deleting the network profile (click the "Forget this network" button) and re-entering the password. This often clears erroneous configuration flags.
It's also worth paying attention to the "WiFi Assistant" feature, which is often built into the app. It's designed to automatically switch to mobile data if the WiFi signal is weak, but sometimes it doesn't work correctly, dropping the connection even when it's stable. Disabling this feature may solve the problem of constant reconnections.
Managing saved networks and priorities
operating system Android at the base Xiaomi Keeps a log of all networks ever used, and sometimes this list becomes too large or conflicting. When several known routers are within range, the phone tries to select the highest priority, and if the selection algorithm fails, the desired auto-connection fails. To manage this list, go to the WiFi menu and tap the three dots or gear icon in the corner of the screen.
Here you'll see the "Manage saved networks" option. This section allows you to see all the SSIDs your smartphone has ever connected to. Connection priority Typically, the network assigned is the one with the last successful connection or the network with the strongest signal, unless the settings are changed manually. Deleting old, unused profiles (for example, Wi-Fi at a cafe or a friend's house) can speed up the process of finding the right router.
- 📱 Click on the network name in the list of saved ones.
- 🗑️ Select the "Delete" or "Forget network" option for unnecessary profiles.
- 🔒 For an important network, select "Configure" and make sure "Auto-connect" is checked.
- 🔄 Restart the WiFi module by turning the slider off and on.
It's important to understand that some corporate networks or networks with a Captive Portal (where you need to log in through a browser) may not support standard auto-connection without additional authorization. In such cases, the system may prompt for login confirmation each time, which is normal security protocol behavior.
Advanced WiFi and Frequency Band Settings
Modern routers often operate in two bands: 2.4 GHz and 5 GHz. Smartphones Xiaomi They can group them under one name, but sometimes they prefer one band over another, which leads to disconnects. In the advanced WiFi settings (often hidden in the "Advanced" menu or accessed by long-tapping), you can find the "Preferred Frequency" setting. If your router is old or located far away, forced switching to 2.4 GHz can stabilize the connection.
There's also a "Use Device MAC Address" option. By default, newer versions of Android use a randomized MAC address to enhance privacy. However, some routers have strict MAC address filtering (whitelisting). If your router is configured to allow only certain devices, enabling randomization will deny the connection. In this case, you should select the "Use Device MAC Address" option (the real MAC address).
| Parameter | Recommended value | Impact on auto-connection |
|---|---|---|
| Frequency range | Auto or 2.4 GHz | High (signal stability) |
| MAC address | Device MAC address | Critical for router filters |
| Proxy | No | Blocks the connection on error |
| IP settings | DHCP (or Static) | Affects the speed of address acquisition |
⚠️ Attention: Changing IP settings from standard DHCP to static requires precise knowledge of the gateway address and DNS. A single digit error will prevent you from connecting to the network.
Don't forget about IPv6 settings either. If your ISP or router doesn't support this protocol correctly, your phone's attempt to establish an IPv6 connection may result in timeouts. In such cases, you should switch the IP configuration to IPv6-only in the advanced network settings. IPv4.
What is MAC address randomization?
This is a security feature that changes your device's unique identifier each time you connect to a new network to prevent trackers from tracking your location. For home networks, this is often overkill.
The impact of energy saving on the operation of the WiFi module
One of the most common reasons why Xiaomi If the Wi-Fi connection doesn't connect automatically or constantly drops, this is due to an aggressive power saving policy. The system tries to conserve battery life by disabling communication modules when the screen is off or the phone is idle. This behavior can be adjusted in the Settings → Battery → Energy saving.
Here, you need to find settings for system processes or the WiFi module itself. If "Hard Limit" or "High Power Saving" mode is selected, the phone will ignore background network scanning tasks. It is recommended to set "Unrestricted" mode for system services responsible for the network, or at least "No Restriction" for critical apps if the issue occurs in them.
- 🔋 Open the "Battery" menu in Settings.
- 🛡️ Go to "Security" or "Optimization" (depending on the MIUI version).
- 🚫 Find "Startup" and make sure system services are not blocked.
- ⚙️ In the "Advanced settings" section, disable "Sleep on standby" for WiFi.
There's also a "Wi-Fi scanning" feature that allows apps to search for networks even when Wi-Fi is turned off. Paradoxically, disabling it sometimes helps the system stop "jumping" between states and finally establish a stable connection. This option can be found in the "Settings" section. Location → WiFi Scanning.
Resetting network settings and troubleshooting problems
If software settings are deeply corrupted and simple methods fail, a complete network settings reset is an effective solution. This won't delete your personal files, photos, or apps, but it will clear all saved WiFi passwords, Bluetooth, and mobile network settings. This returns the communication module to its factory defaults, eliminating software conflicts.
To perform this operation, follow the path Settings → Connection and sharing → Reset Wi-Fi, Mobile Networks, and BluetoothConfirm the action by entering your screen unlock password. After rebooting, the phone will be as good as new in terms of connections, and you'll need to re-enter your home network password, which often resolves the issue of old configurations being stuck.
☑️ Checklist before resetting the network
The built-in diagnostic tool can also pinpoint a specific error. The WiFi menu often has a "Diagnostics" or "Network Check" button. The system will automatically check for internet access, DNS validity, and router status. If the diagnostic shows the error "Connected, no internet access," the problem may lie with the router or ISP rather than your phone.
Troubleshooting common errors and MIUI specifics
Users Xiaomi I often encounter a situation where my phone sees the network but displays "Authentication Error" or "Failed to obtain IP address." The first error almost always indicates an incorrect password or a change in the encryption type on the router (for example, switching from WPA2 to WPA3, which the old phone doesn't support). The second error indicates an address conflict or a DHCP pool full on the router.
In specific cases, manually entering DNS servers can help. In the IP address settings, switch the mode from DHCP to "Static" (or "Manual"). Leave the IP address and gateway as is (the system often uses the current ones), and enter the addresses of public servers in the DNS 1 and DNS 2 fields, such as Google (8.8.8.8) or Cloudflare (1.1.1.1). This often bypasses issues with your DNS provider.
⚠️ Attention: The settings interface may differ depending on the MIUI version (12, 13, 14) or the transition to HyperOS. The layout of menu items is subject to change by developers.
If all else fails, check to see if "Guest Network" mode with client isolation is enabled on your router. In this mode, devices can connect to the WiFi but are unable to see each other and are sometimes blocked from accessing local resources, which the user perceives as a connection error. Also, make sure the date and time on your phone are set correctly—time desynchronization breaks WPA2/WPA3 security protocols.
Why does my phone connect to my neighbor's WiFi?
If your neighbors have a router with a factory name (e.g., TP-LINK_1234) and no password, your phone may automatically connect to it due to its stronger signal. Always rename your network.
Why does Xiaomi forget the WiFi network after rebooting?
This could be due to a corrupted system configuration file or a conflict with a cleaning app. Try deleting the network, restarting your phone, and reconnecting. Also, check if you're using a third-party antivirus or VPN that could be blocking system changes.
How to enable hidden network on Xiaomi?
In the WiFi menu, scroll to the bottom of the list and select "Add network." Enter the exact name (SSID), select the encryption type (usually WPA/WPA2), and enter the password. Hidden networks won't appear in the general list; your phone will need to search for them automatically.
Does the case affect WiFi signal reception?
Yes, metal cases or magnetic cases can significantly shield the signal from antennas, which are often located on the top or bottom of the case. XiaomiIf auto-connection only works near the router, remove the case to check.
What should I do if the WiFi button has turned gray and won't turn on?
This indicates a serious driver error or hardware failure. Try a full reset. If the button remains grayed out, the motherboard or WiFi module will likely need to be replaced at a service center.
Is it possible to speed up WiFi using the engineering menu?
Theoretically, you can change the WiFi region to the US or Australia, where stronger signal strength is permitted. However, this requires root access and entering a code into the dialer. Inexperienced users should avoid accessing the engineering menu to avoid voiding the warranty.