It is impossible to imagine a modern smartphone without access to high-speed Internet, and Redmi 9T This is no exception. Properly setting up a wireless connection not only saves mobile data but also ensures stable navigation, messaging, and streaming services. Despite its apparent simplicity, the MIUI interface installed on this device has many nuances that can affect the speed and security of data transfer.
Device owners often encounter situations where the phone can't see the network or obtain an IP address, even though the router is working properly. This can be due to software glitches in the operating system. Android, as well as with incorrect router security settings. Understanding the basic operating principles of the module Wi-Fi will help you quickly diagnose the problem and fix it without contacting a service center.
This guide details the connection process, advanced settings, and power-saving optimization for a stable connection. We'll cover operating in the following bands: 2.4 GHz And 5 GHzWe'll also explore specific MIUI features that can block connections. A smart approach to configuration will ensure maximum performance of your gadget on your home or office network.
Basic wireless network connection
The first step to accessing the internet is activating the wireless module in the system. Unlike some other manufacturers, Xiaomi allows you to manage this through the control center or main settings. To begin, unlock your smartphone's screen and look for the fan-shaped or lightning bolt icon in the notification shade. Tapping it activates a search for available hotspots within range.
More detailed control is available through the menu. Settings → Wi-FiHere, the user sees a list of all detected networks, sorted by signal strength. The system automatically marks previously saved access points with a lock or check mark, making it easier to reconnect in familiar locations, such as home or office.
When selecting a secure network, you'll be prompted to enter a password. Once entered, the system will attempt to obtain addresses from the router's DHCP server. A successful connection is indicated by the appearance of the icon. Wi-Fi in the status bar and a characteristic sound signal.
- 📶 Make sure the Wi-Fi slider is set to the active position (it lights up blue).
- 🔑 Enter your password carefully, checking your keyboard layout and capitalization.
- 🔄 If the connection fails, try deleting the network from the list of saved networks and re-entering the data.
- 📡 Check if your router has MAC address filtering enabled, which could block new devices.
⚠️ Note: If after entering the correct password the connection status changes to "Obtaining IP address..." and then resets, the problem most likely lies in an overflowing DHCP table on the router or an address conflict.
Working with hidden networks and advanced settings
For security reasons, some network administrators hide the access point name (SSID), making it invisible to regular scans. To connect to such a network, Redmi 9T, you need to manually add a profile. In the Wi-Fi menu, scroll to the bottom and select "Add network" or click the plus icon. This will open a form for manually entering the parameters.
In the window that opens, you will need to enter the exact network name, observing the letter case, and select the encryption type. The most commonly used standard is WPA/WPA2-Personal, however, in corporate segments, more complex authorization may be used 802.1xAfter filling in the fields, the phone will begin a targeted search for this particular identifier, ignoring other broadcast signals.
Advanced users can access the additional settings menu, which is hidden under "Advanced" or accessed by long-tapping the network name. Here, you can change the device's MAC address to a random one, increasing anonymity in public places. You can also configure a proxy server if required by local internet access rules.
Why hide SSID?
Hiding the network name isn't a reliable security method, as professional sniffers can easily detect hidden network service packets. It only creates a barrier for regular users, but doesn't replace a strong WPA3 password.
An important aspect is the choice of frequency range. Redmi 9T supports the standard 802.11ac, which allows you to work in the range 5 GHzThis range provides higher data transfer rates and is less susceptible to interference from microwave ovens and Bluetooth devices, but has a shorter range compared to 2.4 GHz.
Setting up a static IP address
In some cases, dynamic address allocation can lead to unstable operation of certain applications or network printers. To solve this problem, Redmi 9T You can register a static one IP addressTo do this, click the arrow next to the name of the connected network or go to the properties of the current connection.
In the IP settings section, you need to switch the mode from "DHCP" to "Static." Fields for manually entering numerical values will open. It's important to know the addressing scheme of your local network. Typically, the gateway (router) has an address 192.168.1.1 or 192.168.0.1, and the phone must be on the same subnet.
Filling out the fields requires care: an error in one digit of the subnet mask or gateway address will result in no internet access, although the local connection may appear active. After saving the settings, the phone will reconnect to the network with the new settings.
| Parameter | Description | Example of meaning |
|---|---|---|
| IP address | The unique address of a device on the network | 192.168.1.55 |
| Gateway | Router address, Internet access | 192.168.1.1 |
| Network mask | Determines the size of the local network | 255.255.255.0 |
| DNS 1 | Primary name server (often from Google) | 8.8.8.8 |
| DNS 2 | Backup name server | 8.8.4.4 |
Optimizing energy saving and stability
MIUI is known for its aggressive power-saving policy, which can disconnect Wi-Fi when the smartphone's screen is off. This often results in delayed notifications from messaging apps. To avoid this, you need to customize the system behavior for a specific network or app.
In the battery settings, find the list of apps and set the "No restrictions" mode for critical apps (e.g., WhatsApp, Telegram, Mail). This will prevent the system from disabling background activity and the network module for these apps. Also in the Wi-Fi menu, there's a "Wi-Fi mode" option where you can disable data saving.
There is a function Wi-Fi Assistant, which automatically switches your smartphone to mobile data if the wireless signal becomes weak. While this is convenient, it can lead to unexpected charges on some data plans. You can disable this option in the advanced Wi-Fi settings by unchecking "Switch to mobile data."
- ⚡ Disable "Sleep Mode" for Wi-Fi in advanced settings if you want constant notifications.
- 🔋 Check the startup list and allow important apps to run in the background.
- 📉 Disable automatic switching to mobile data if your plan is limited.
- 🛡️ Use the built-in antivirus to check the security of the networks you connect to.
⚠️ Note: The power saving menu interface may differ depending on the MIUI version (12, 13, 14). If you don't find the exact name of the item, look for similar options in the "Battery" or "Apps" section.
Diagnosing and troubleshooting common errors
Even with proper configuration, failures may occur due to software conflicts or hardware issues. If Redmi 9T If it says "Saved, protected" but won't connect, try forgetting the network and reconnecting. A common cause is incorrect encryption type selected when manually adding a hidden network.
Another common issue is a full network settings cache. In this case, resetting network settings can help. This won't delete your personal files, photos, or contacts, but it will clear all saved Wi-Fi passwords, Bluetooth pairings, and mobile data settings. You can perform the reset through the menu. Settings → Connection and sharing → Reset Wi-Fi, mobile networks, and Bluetooth.
If the problem persists, it's worth checking the date and time. An incorrect system clock can cause security certificate errors, which can cause the protocol HTTPS will block the connection. Make sure automatic network time synchronization is enabled.
☑️ Connection diagnostics
In rare cases, unstable operation may be caused by outdated modem firmware. Check for system updates in the section About the phoneManufacturers regularly release patches to fix wireless driver errors.
Using dual-band routers
Modern routers often broadcast two networks with the same name, but on different frequencies. Redmi 9T can automatically select the best range. However, if you want to force the phone to work in a range 5 GHz For maximum speed, make sure you are connected to this network (usually it has a set-top box _5G or similar).
Range 5 GHz Provides a more stable ping, which is critical for online gaming and video calls. However, the signal penetrates less well through walls. If you're far from the router, your phone may automatically switch to 2.4 GHz, even if the network name is the same. For stationary use in a single room, it's best to separate network names in the router settings.
You can check your current connection speed using built-in tests or third-party apps. Connection properties often display the actual link speed (Link Speed), which represents the theoretical maximum of the current connection. If it's low, it might be worth changing the broadcast channel on your router.
Why doesn't Redmi 9T see the 5 GHz network?
The smartphone supports 5 GHz, but if the router is configured to use channels above 52 (DFS channels), the phone may not see the network until it detects radar signals. Try setting a static channel in the 36-48 range in the router settings.
How to find the Wi-Fi MAC address on Redmi 9T?
The MAC address can be found in the menu Settings → About phone → All settingsThe real or randomized address is also displayed in the properties of the connected Wi-Fi network.
Is it safe to use public Wi-Fi networks?
Public networks without a password don't encrypt your traffic. For security, use a VPN or avoid entering sensitive data (such as bank passwords) when connecting to public hotspots.
Can a case impair Wi-Fi signal?
Yes, cases with metal inserts or a thick layer of metal can shield the antennas located inside the smartphone's body. Try removing the case to check the signal strength.