Smartphones of the series Redmi from the company Xiaomi have long established themselves as reliable devices with an excellent price-quality ratio. Model Redmi 9T was no exception, offering users a powerful battery and a modern interface. However, as with any operating system, Android with shell MIUI, sometimes there are difficulties with basic functions, such as connecting to a wireless network.
In this article we will discuss in detail how to set up Wi-Fi on your device to ensure stable internet access. We'll cover not only the standard steps but also troubleshooting methods for common errors that may arise during the setup process.
You don't need any special knowledge or tools to get started. The entire process takes just a few minutes if you follow the clear steps. Let's move on to setting up your gadget.
Basic wireless setup
The first step is always to activate the communication module in the system. Without this, any further action is pointless, as the device simply won't "see" surrounding networks. Make sure you're within range of the router's signal strength.
To enable the feature, swipe down on the notification shade. Look for the fan-shaped icon or the letter "W." If it's gray, tap it once to turn it blue or green. This will initiate a broadcast scan.
More detailed settings are available in the main menu. Go to the section Settings, then select the item Wi-FiHere you'll see a list of available access points. Find your network name in the list and click on it.
- 📶 Make sure the slider at the top of the screen is activated (it's blue).
- 🔍 If your network is not on the list, click the "Add network" button at the bottom of the list.
- 🔐 Please enter your password accurately, respecting the letter case (upper and lower case).
- ✅ Click the "Connect" button and wait until the "Connected" status appears.
⚠️ Important: When entering your password, pay attention to your keyboard layout. A common mistake is using Cyrillic instead of Latin, or vice versa, which makes the password incorrect.
After successful authorization, the connection status will appear next to the signal icon. Now your Redmi 9T Ready to use the internet. If the system displays "Connection Error" or "Unable to obtain IP address," proceed to the next section for diagnostics.
Troubleshooting connection errors and obtaining an IP address
One of the most common problems in the environment MIUI The problem is stuck at the IP address acquisition stage. This means the phone has physically connected to the router but cannot negotiate an address for data exchange. This is often resolved by simply rebooting the router.
Try forgetting the network and reconnecting. To do this, in the list of networks, click on the name of your access point and select Delete or Forget the networkAfter this, repeat the password entry procedure from the very beginning.
If simple methods don't help, it's worth checking your IP settings. In rare cases, a previously assigned static address may conflict with your router's current settings. You should reset the router to obtain addresses automatically.
- Go to settings Wi-Fi and click on the arrow next to your network name.
- Find the section
IP settings(usually there is a DHCP value there). - If Static is selected, switch to
DHCP. - Save your changes and try connecting again.
☑️ Network diagnostics
Security is also worth considering. Some routers use MAC address filtering. If yours is protected this way, your phone simply won't be allowed onto the network, even with the correct password. You'll need to find your phone's MAC address in the "About phone" settings or in the Wi-Fi status and add it to the router's whitelist.
Problems with 2.4 GHz and 5 GHz frequencies
Modern routers often operate in two ranges: 2.4 GHz And 5 GHz. Model Redmi 9T It supports both standards, but conflicts may arise if the router broadcasts them under the same name (SSID). The phone may try to lock onto the longer, but faster, 5 GHz band, losing stability.
For stable operation in an apartment with many walls, the 2.4 GHz frequency is often better. It penetrates obstacles better, although it has a lower speed. If you have the option to separate networks in your router settings, do so and connect your phone to the "2.4G" network.
You can also find hidden options in the smartphone settings. In the section Wi-Fi Assistant (Wi-Fi Assistant) The "Switch to mobile data" feature is often enabled when the signal is weak. This can create the illusion of Wi-Fi problems, when in reality, the phone is simply dropping the connection.
| Characteristic | 2.4 GHz band | 5 GHz band |
|---|---|---|
| Transfer speed | Up to 450 Mbps | Up to 1300 Mbps |
| Range of action | High | Average |
| Penetration ability | Good | Low |
| Airtime congestion | High | Low |
How do I know what frequency I'm operating on?
Tap the connected network in the Wi-Fi settings. The "Frequency" line will say 2.4 GHz or 5 GHz. If you don't see this line, check your connection speed: up to 433 Mbps is 2.4 GHz, and above that is 5 GHz.
If you're far from your router, forcing it to switch to 2.4 GHz can significantly improve connection stability. You can do this by deleting the 5 GHz network from your phone's memory and leaving only the one you need.
Resetting network settings and system solutions
When software glitches accumulate, a more drastic solution may be necessary. Resetting network settings restores all connection settings to factory defaults. This won't delete your photos or contacts, but it will require you to re-enter passwords for all Wi-Fi networks.
To perform this operation, go to the menu Settings, then Connection and sharing. Find the item at the very bottom of the list. Reset Wi-Fi, Mobile Networks, and Bluetooth. Click the button Reset settings and confirm the action with the screen unlock code.
After rebooting, the phone will be as good as new in terms of network settings. This often resolves issues with frozen services. Android, responsible for network interaction. If this doesn't help, the problem may lie deeper.
⚠️ Note: Resetting network settings will also delete saved pairings of Bluetooth devices (headphones, watches). You will need to pair them again.
Another effective method is Safe Mode. It allows you to start your phone without any third-party apps. If Wi-Fi works perfectly in Safe Mode, it means that an app you installed (antivirus, cleaner, VPN) is blocking the connection.
Speed and stability optimization
Once the connection is successful, it is important to ensure maximum performance. MIUI There are built-in optimization tools. In the Wi-Fi settings section, find the item Wi-Fi AssistantHere you can enable game acceleration, which prioritizes traffic for the running application.
It's also worth checking if data saving mode is enabled. It can limit background app activity, causing notifications to arrive late. Disable "Data Saver" in your connection settings if instant message delivery is important to you.
Don't forget to update your firmware. Company Xiaomi regularly releases security patches and driver improvements for communication modules. Go to Settings → About the phone and check for updates.
- 🚀 Disable "Adaptive Connection" on your Wi-Fi network if your phone is constantly jumping between networks.
- 🔒 Use WPA2/WPA3 encryption for maximum data security.
- 📡 Place the router on a high surface and away from microwave ovens.
Frequently Asked Questions (FAQ)
Why doesn't Redmi 9T detect 5GHz Wi-Fi?
Make sure your router is actually broadcasting in this range and that the channel isn't hidden. Also, check the region in your router settings: some 5 GHz channels are restricted in certain countries and may not appear on your phone.
How to save a Wi-Fi password as a QR code?
In the Wi-Fi settings menu, tap the connected network. There will be a "Share" button or a QR code icon. Another user can scan it with their camera and connect without entering a password.
Why does Wi-Fi turn off by itself?
Most often, this is due to the power saving feature. Go to battery settings and set the "System Services" or "Wi-Fi" app (if listed) to "Unlimited."
Is it possible to share Wi-Fi that is connected to a phone?
Some MIUI versions have a "Wi-Fi Repeater" feature. If it's not available, the phone can only share mobile data via a hotspot, but not replicate another Wi-Fi signal.
I reset my network settings, but still can't connect to the internet. What should I do?
Try setting a static IP address manually by specifying the gateway (usually 192.168.0.1 or 1.1) and DNS (e.g., 8.8.8.8 from Google). This often bypasses router DHCP errors.