Smartphones of the line Redmi from the company Xiaomi They are deservedly popular due to their excellent price-quality ratio, but the initial setup of a wireless connection can raise questions for inexperienced users. Redmi 9 runs under shell control MIUI, which has its own features in the menu and logic of the network parameters, different from the standard AndroidProper configuration not only ensures stable internet access, but also significantly saves battery life and increases data transfer speed.
In this detailed guide, we'll cover every connection step, from basic password entry to advanced DNS and IP addressing settings often required to resolve specific router issues. You'll learn how to make your phone "see" hidden networks, what to do if your device keeps disconnecting, and how to switch to the faster 5 GHz frequency if your router supports it. The Wi-Fi module in Redmi 9 supports the 802.11ac standard, which allows you to achieve high speeds with the appropriate equipment.
Before making any changes to the system, make sure your router is turned on and providing a signal, and your smartphone has at least a minimum battery charge. Incorrect network settings rarely lead to critical failures, but they can temporarily limit your internet access, so follow the instructions carefully. We'll cover both automatic and manual configuration methods so you can choose the best option for your situation.
Basic wireless network connection
The initial connection process on devices Xiaomi It's standardized and takes only a few seconds if you have a strong network coverage area. You need to unlock your smartphone's screen and find the gear icon, which indicates access to system settings. In the menu that opens, select Wi-Fi, which is usually located at the top of the list or under the Wireless & Networks tab.
After activating the toggle switch, the device will automatically search for available access points within the antenna's range. The list will display the network names (SSIDs), signal strength, and security type, if any. Find your router's name in the list and tap it; if the network is password-protected, the system will prompt you to enter the security key.
- 📡 Make sure the power slider is in the active position and is blue or green.
- 🔑 Please enter your password carefully, observing the letter case, as the system distinguishes between uppercase and lowercase characters.
- 👁️ To check that the characters you entered are correct, use the "Show Password" function by clicking on the corresponding eye icon.
- ✅ After successful authentication, the “Connected” status and signal strength icon will appear under the network name.
⚠️ Attention: If you make a mistake when entering your password, your phone may attempt to connect, but after a few seconds, it will display an "Authentication Error" message. In this case, tap the network name and select "Forget Network," then try again.
It is important to note that Redmi 9 It can remember up to a hundred different networks, automatically connecting to them when within range. This is convenient for users who frequently move between home, work, and public spaces. However, if you connect to a public network in a cafe or on public transport, the system may request additional confirmation through the browser (Captive Portal), which is normal behavior for open hotspots.
Advanced settings and static IP
For most users, automatic DHCP settings are sufficient, but in some cases, manual adjustments to connection parameters are required. This may be necessary for connecting to printers, setting up a local server, or resolving address conflicts in complex home networks. To access these settings, click the arrow to the right of the connected network name or select "Setup" in the access point management menu.
In the window that opens, find the "IP Settings" section and change the value from "DHCP" to "Static." This will enable the fields for manually entering addresses. You'll need to know the addressing information for your local network, which can usually be found on the router's label or in the settings of any other connected device.
☑️ Checking data for a static IP
When entering data manually, it's important to avoid errors, as an incorrect gateway will completely disable your device's internet access, even if a connection to the router is established. The "Gateway" field should contain your router's IP address, and the "Network Prefix Length" for home networks is usually 24.
| Parameter | Description | Typical value |
|---|---|---|
| IP address | A unique phone number on the network | 192.168.1.150 |
| 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 | 8.8.8.8 |
Using public DNS servers such as 8.8.8.8 from Google or 1.1.1.1 from Cloudflare, often helps speed up page response times and bypass ISP blocking. Enter your data carefully, checking every digit, as the interface MIUI There is no function to automatically check the correctness of the entered IP address before saving.
Works with 2.4 GHz and 5 GHz frequencies
Smartphone Redmi 9 Equipped with a dual-band wireless module, it operates in both the congested 2.4 GHz band and the faster 5 GHz band. Choosing the right frequency directly impacts connection stability and maximum content download speeds, especially in apartment buildings where the airwaves are clogged with signals from neighboring routers.
The 2.4 GHz band offers better penetration through walls and ceilings, but its speed is limited and its interference immunity is poor. The 5 GHz frequency, on the other hand, offers high data transfer rates and minimal latency, but its signal range is significantly shorter and it has difficulty penetrating solid structures.
- 🚀 Choose 5 GHz for online gaming, 4K video streaming, and video calls if you're close to your router.
- 🏠 Use 2.4 GHz if your smartphone is in a distant room or behind several walls from the signal source.
- 📉 If your 5GHz speed drops as you move further away, try switching to 2.4GHz for stability.
- ⚙️ Some routers combine both frequencies under one name, and the phone itself chooses the best one, but it is better to separate them in the router settings.
⚠️ Attention: Router interfaces and firmware are constantly being updated. If you can't find the frequency separation in your phone settings, your router may be broadcasting a single network. In this case, frequency management occurs on the ISP's equipment or your router.
To force frequency selection on Redmi 9 It is often required that the router broadcast networks with different names (SSID), for example, Home_WiFi And Home_WiFi_5GOtherwise, the phone will automatically decide which frequency to connect to based on the signal strength, which may not always result in optimal results.
Why is 5GHz faster?
The 5 GHz band has more open channels and a wider bandwidth, allowing more data to be transmitted per unit of time without interference from microwave ovens and Bluetooth devices operating on 2.4 GHz.
Troubleshooting common connection issues
Even with proper setup, users may encounter a situation where Redmi 9 The Wi-Fi connection fails or keeps dropping. Most often, the problem stems from a software glitch in the network modules or an IP address conflict, which can be resolved by simply resetting the phone and router's network settings.
If your phone displays "Obtaining IP address..." and then drops the connection, try selecting "Forget this network" in the Wi-Fi settings and reconnecting. Another effective method is to temporarily disable the "Wi-Fi Assistant" feature in the settings, which may attempt to switch you to mobile data when the signal is weak.
If the problem occurs only on one specific device, it might be worth resetting the network settings to factory defaults. This will delete all saved passwords and Bluetooth configurations, but it often resolves underlying software errors in the protocol stack.
Settings → Connection and sharing → Reset Wi-Fi, mobile networks, and Bluetooth → Reset settingsAfter resetting, you'll need to re-enter passwords for all your wireless networks. If the problem persists even after resetting and updating the router's firmware, it's possible there's a hardware issue with your smartphone's antenna module, which requires contacting a service center.
Energy optimization and security
The wireless module is one of the main energy consumers in a smartphone, so proper configuration will help extend battery life. Redmi 9. In the system MIUI Aggressive power-saving algorithms have been implemented that can limit background activity of applications when running over Wi-Fi, which sometimes leads to delayed notifications.
To avoid issues receiving messages in messaging apps, we recommend adding important apps to the battery exceptions list or allowing them to auto-start. You should also disable the "Scan networks even in sleep mode" feature if you don't use your phone for location services or smart home features; this will slightly reduce battery drain.
- 🔒 Use WPA2/WPA3 encryption type, avoiding the outdated WEP, which is easy to crack.
- 🔋 Turn off Wi-Fi if you are in an area where there is no network coverage to prevent your phone from wasting energy constantly searching.
- 🛡️ Do not connect to open networks without a password to conduct banking transactions.
- 🔄 Update your phone's firmware regularly to receive security patches.
Connection security also depends on how complex the password is set on your router. Simple combinations like 12345678 or password can be hacked by attackers in minutes, leading to the theft of personal data or the use of your traffic for illegal activities.
Additional functions and utilities
shell MIUI offers a number of additional wireless networking tools that can be useful in various situations. For example, the "Guest" feature allows you to create an isolated network for visitors, preventing them from accessing your personal files and smart home devices, if your router supports this feature and is configured accordingly.
The phone also has the ability to generate a QR code for quickly connecting other devices. You don't need to dictate a long password to your friends—just show them your smartphone screen. This feature is built directly into the connected network management menu.
For advanced users, a function is available Wi-Fi Assistant, which analyzes connection speed and can offer to switch to a mobile network if Wi-Fi is unstable. However, with mobile data charges, it's best to keep this feature disabled to avoid unexpected charges.
How to share Wi-Fi via QR code on Redmi 9?
Go to Wi-Fi settings and tap the name of the connected network. A QR code will appear on the screen. Another user can scan it with their camera or through the connection menu to instantly access it without entering a password.
Why doesn't my phone see the 5 GHz network?
This can happen if the router is too far away, as the 5 GHz signal has a shorter range. Also, check that your router isn't set to a channel higher than 140, as some regional smartphone versions may not support the extreme frequencies of the range.
Is it possible to speed up Wi-Fi on Redmi 9?
Yes, this can be done by disabling older standards (b/g) in the router settings, leaving only n/ac, and selecting a clear channel. On the phone itself, resetting network settings and disabling power saving for the Wi-Fi module helps.
What to do if Wi-Fi works but there is no internet?
Check if you have internet access on your other devices. If so, try setting a static DNS (8.8.8.8) in your phone's Wi-Fi settings. If not, the issue is with your ISP or router.